First Mid Bancshares (FMBH) 10-K 5 Mar 19 2018 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2018	Mar. 05, 2019	Jun. 30, 2018
Document and Entity Information [Abstract]
Entity Registrant Name	FIRST MID ILLINOIS BANCSHARES INC
Entity Central Index Key	700,565
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Document Type	10-K
Document Period End Date	Dec. 31, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Common Stock, Shares Outstanding		16,671,367
Entity Well-known Seasoned Issuer	No
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 513,588,874

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Cash and due from banks:
Non-interest bearing	$ 63,593,000	$ 75,398,000
Interest bearing	77,142,000	12,990,000
Federal funds sold	665,000	491,000
Cash and cash equivalents	141,400,000	88,879,000
Certificates of deposit investments	7,569,000	1,685,000
Investment securities:
Available-for-sale, at fair value	692,274,000	578,579,000
Held-to-maturity, at amortized cost (estimated fair value of $67,909 and $68,457 at December 31, 2018 and 2017, respectively)	69,436,000	69,332,000
Loans held for sale	1,508,000	1,025,000
Loans	2,643,011,000	1,938,476,000
Less allowance for loan losses	(26,189,000)	(19,977,000)
Net loans	2,616,822,000	1,918,499,000
Interest receivable	16,881,000	10,832,000
Other real estate owned	2,534,000	2,754,000
Premises and equipment, net	59,117,000	38,266,000
Goodwill, net	105,277,000	60,150,000
Intangible assets, net	33,820,000	10,679,000
Bank Owned Life Insurance	65,484,000	41,883,000
Other assets	27,612,000	18,976,000
Total assets	3,839,734,000	2,841,539,000
Deposits:
Non-interest bearing	575,784,000	480,283,000
Interest bearing	2,412,902,000	1,794,356,000
Total deposits	2,988,686,000	2,274,639,000
Repurchase agreements with customers	192,330,000	155,388,000
Interest payable	1,758,000	602,000
Federal Home Loan Bank Advances Short and Long Term	119,745,000	60,038,000
Other borrowings	7,724,000	10,313,000
Junior subordinated debentures	29,000,000	24,000,000
Other liabilities	24,627,000	8,595,000
Total liabilities	3,363,870,000	2,533,575,000
Stockholders' Equity
Common stock, $4 par value; authorized 30,000,000 shares; issued 17,219,012 shares in 2018 and 13,231,225 shares in 2017	70,876,000	54,925,000
Additional paid-in capital	293,937,000	163,603,000
Retained earnings	131,392,000	104,683,000
Deferred compensation	2,761,000	3,540,000
Accumulated other comprehensive loss	(6,473,000)	(2,304,000)
Less treasury stock at cost, 574,377 shares in 2018 and 570,477 shares in 2017	(16,629,000)	(16,483,000)
Total stockholders’ equity	475,864,000	307,964,000
Total liabilities and stockholders’ equity	$ 3,839,734,000	$ 2,841,539,000

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Investment securities:
Debt Securities, Held-to-maturity, Fair Value	$ 67,909	$ 68,457
Stockholders Equity
Common stock, par value (in dollars per share)	$ 4	$ 4
Common stock, authorized (in shares)	30,000,000	18,000,000
Common stock, issued (in shares)	17,219,012	13,231,225
Treasury stock (in shares)	574,377	570,477

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Interest income:
Interest and fees on loans	$ 105,772	$ 82,670	$ 61,952
Taxable	13,070	11,708	9,288
Exempt from federal income tax	5,167	4,774	3,726
Interest on certificates of deposit investments	66	50	295
Interest on federal funds sold	8	62	40
Interest on deposits with other financial institutions	482	291	195
Total interest income	124,565	99,555	75,496
Interest expense:
Interest on deposits	8,571	3,995	2,713
Interest on securities sold under agreements to repurchase	330	181	96
Interest on FHLB borrowings	2,071	883	630
Interest on other borrowings	446	496	181
Interest on subordinated debentures	1,409	927	672
Total interest expense	12,827	6,482	4,292
Net interest income	111,738	93,073	71,204
Provision for loan losses	8,667	7,462	2,826
Net interest income after provision for loan losses	103,071	85,611	68,378
Other income:
Trust revenues	5,786	3,744	3,517
Brokerage commissions	2,674	2,161	1,908
Insurance commissions	5,592	3,872	3,452
Service charges	7,435	6,920	6,791
Securities gains, net	901	616	1,192
Mortgage banking revenue, net	1,205	1,184	1,172
ATM / debit card revenue	7,487	6,495	6,004
Bank owned life insurance	1,389	1,638	671
Other income	(2,945)	(3,706)	(2,205)
Total other income	35,414	30,336	26,912
Other expense:
Salaries and employee benefits	46,803	39,756	32,354
Net occupancy and equipment expense	14,533	12,596	11,418
Net other real estate owned expense	282	560	60
Amortization of intangible assets	1,059	905	966
Amortization of intangible assets	3,215	2,153	1,909
Stationery and supplies	963	724	815
Legal and professional	5,243	3,887	3,035
Marketing and donations	1,794	1,356	1,845
ATM / debit card expense	2,971	2,393	1,994
Other expense	13,117	9,891	7,114
Total other expense	89,980	74,221	61,510
Income before income taxes	48,505	41,726	33,780
Income taxes	11,905	15,042	11,940
Net income	36,600	26,684	21,840
Dividends on preferred shares	0	0	825
Net income available to common stockholders	$ 36,600	$ 26,684	$ 21,015
Per share data:
Basic net income per common share available to common stockholders	$ 2.53	$ 2.13	$ 2.07
Diluted earnings per common share	2.52	2.13	2.05
Cash dividends declared per common share	$ 0.70	$ 0.66	$ 0.62

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 36,600	$ 26,684	$ 21,840
Other Comprehensive Income [Abstract]
Unrealized gains (losses) on available-for-sale securities, net of taxes of $1,475, $(2,855), and $3,848 for the years ended December 31, 2018, 2017 and 2016, respectively	(3,611)	3,845	(6,025)
Unamortized holding gains on held to maturity securities transferred from available for sale, net of taxes of $(33), $(32), and $(172) for December 31, 2018, 2017 and 2016, respectively	82	80	268
Less: reclassification adjustment for realized gains included in net income net of taxes of $261, $216, and $465 for the years ended December 31, 2018, 2017 and 2016, respectively	(640)	(400)	(727)
Other comprehensive income (loss), net of taxes	(4,169)	3,525	(6,484)
Comprehensive income	$ 32,431	$ 30,209	$ 15,356

Consolidated Statements of Co_2

Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Other Comprehensive Income [Abstract]
Unrealized gains on available-for-sale securities, taxes	$ 1,475	$ (2,855)	$ 3,848
Other Comprehensive Income Loss Transfers From Available For Sale To Held To Maturity, Tax	(33)	(32)	(172)
Other Comprehensive Income Loss Reclassification Adjustment For Sale Or Writedown Of Securities Included In Net Income Tax	$ 261	$ 216	$ 465

Consolidated Statements of Chan

Consolidated Statements of Changes in Stockholders' Equity Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Preferred Stock	Common Stock	Additional Paid-in Capital	Retained Earnings	Deferred Compensation	Accumulated Other Comprehensive Income (Loss)	Treasury Stock	First BancTrust [Member]	First BancTrust [Member]Preferred Stock	First BancTrust [Member]Common Stock	First BancTrust [Member]Additional Paid-in Capital	First BancTrust [Member]Retained Earnings	First BancTrust [Member]Deferred Compensation	First BancTrust [Member]Accumulated Other Comprehensive Income (Loss)	SCB Bancorp [Member]	SCB Bancorp [Member]Preferred Stock	SCB Bancorp [Member]Common Stock	SCB Bancorp [Member]Additional Paid-in Capital	SCB Bancorp [Member]Retained Earnings	SCB Bancorp [Member]Deferred Compensation	SCB Bancorp [Member]Accumulated Other Comprehensive Income (Loss)	First Clover Leaf [Member]	First Clover Leaf [Member]Preferred Stock	First Clover Leaf [Member]Common Stock	First Clover Leaf [Member]Additional Paid-in Capital	First Clover Leaf [Member]Retained Earnings	First Clover Leaf [Member]Deferred Compensation	First Clover Leaf [Member]Accumulated Other Comprehensive Income (Loss)	First Clover Leaf [Member]Treasury Stock
Balance at Dec. 31, 2015	$ 205,009	$ 27,400	$ 38,015	$ 79,626	$ 71,712	$ 3,245	$ 723	$ (15,712)
Net income	21,840				21,840
Other Comprehensive Income (Loss), Net of Tax	(6,484)						(6,484)
Dividends on preferred shares	(825)				(825)
Dividends on common stock	(6,511)				(6,511)
Issuance of common shares pursuant to the Dividend Reinvestment Plan	1,323		202	1,121
Issuance of common shares pursuant to the Deferred Compensation Plan	119		19	100
Issuance of common shares pursuant to the First Retirement & Savings Plan	14		2	12
Issuance of restricted common shares pursuant to the 2007 Stock Incentive Plan	80		12	68
Issuance of common shares pursuant to the exercise of stock options	62	0	10	52	0	0	0	0
Stock issued during period, Conversion of Preferred Shares	0	(27,400)	(5,421)	(21,979)	0	0	0	0
Stock Issued During Period, Value, Acquisitions																							$ 65,697	$ 0	$ 10,402	$ 55,295	$ 0	$ 0	$ 0	$ 0
Deferred Compensation	0					(25)		(25)
Tax benefit related to Deferred Compensation Plan distributions	140			140
Grant of restricted stock units pursuant to the 2007 Stock Incentive Plan	278			278
Vested restricted shares/units compensation expense	(69)	0	0	0	0	(69)	0	0
Balance at Dec. 31, 2016	280,673	0	54,083	158,671	86,216	3,201	(5,761)	(15,737)
Net income	26,684				26,684
Other Comprehensive Income (Loss), Net of Tax	3,525						3,525
Dividends on preferred shares	0
Reclassification from AOCI, Current Period, Tax	0		0	0	68	0	(68)	0
Dividends on common stock	(8,285)				(8,285)
Issuance of common shares pursuant to the Dividend Reinvestment Plan	1,057		120	937
Issuance of common shares pursuant to the Deferred Compensation Plan	232		28	204
Issuance of restricted common shares pursuant to the 2007 Stock Incentive Plan	1,804		189	1,615
Issuance of common shares pursuant to the exercise of stock options	699		110	589
Stock Issued During Period, Value, New Issues	3,251		395	2,856	0	0	0	0
Purchase of treasury shares	(797)							(797)
Deferred Compensation	0					(51)		(51)
Tax benefit related to Deferred Compensation Plan distributions	216			216
Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation	5		0	5	0	0	0	0
Adjustment to Additional Paid in Capital, Income Tax Effect from Share-based Compensation, Net	(1,849)		0	(1,849)	0	0	0	0
Grant of restricted stock units pursuant to the 2007 Stock Incentive Plan	359			359
Vested restricted shares/units compensation expense	390		0	0	0	390	0	0
Balance at Dec. 31, 2017	307,964		54,925	163,603	104,683	3,540	(2,304)	(16,483)
Net income	36,600				36,600
Other Comprehensive Income (Loss), Net of Tax	(4,169)						(4,169)
Dividends on preferred shares	0
Dividends on common stock	(9,891)				(9,891)
Issuance of common shares pursuant to the Dividend Reinvestment Plan	1,099		123	976
Issuance of common shares pursuant to the Deferred Compensation Plan	345		36	309
Issuance of restricted common shares pursuant to the 2007 Stock Incentive Plan	516		53	463
Issuance of common shares pursuant to the exercise of stock options	299		52	247
Stock Issued During Period, Value, Acquisitions									$ 61,222	$ 6,576	$ 54,646	$ 0	$ 0	$ 0	$ 0	$ 48,092	$ 5,322	$ 42,770	$ 0	$ 0	$ 0	$ 0
Stock Issued During Period, Value, New Issues	33,986	$ 3,789	30,197	0	0	0	0
Purchase of treasury shares	(138)							(138)
Deferred Compensation	0					(8)		(8)
Tax benefit related to Deferred Compensation Plan distributions	160			160
Grant of restricted stock units pursuant to the 2007 Stock Incentive Plan	566			566
Vested restricted shares/units compensation expense	(787)		0	0	0	(787)	0	0
Balance at Dec. 31, 2018	$ 475,864		$ 70,876	$ 293,937	$ 131,392	$ 2,761	$ (6,473)	$ (16,629)

Consolidated Statements of Ch_2

Consolidated Statements of Changes in Stockholders' Equity Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Dividends on perferred stock (in dollars per share)	$ 0	$ 0	$ 150
Dividends on common stock (in dollars per share)	$ 0.70	$ 0.66	$ 0.62
Issuance of common shares pursuant to the Dividend Reinvestment Plan (in shares)	30,655	30,059	50,446
Issuance of common shares pursuant to the Deferred Compensation Plan (in shares)	9,043	6,875	4,683
Issuance of common shares pursuant to the First Retirement & Savings Plan (in shares)	0	0	558
Issuance of restricted common shares pursuant to the Stock Incentive Plan (in shares)	13,250	47,339	2,910
Stock issued during period, new issue (in shares)	0	98,710	0
Stock Issued During Period, Shares, Conversion of Convertible Securities	0	0	1,355,319
number of preferred shares converted to common shares	0	0	5,500
Purchase of treasury shares (in shares)	3,900	20,734	0
Issuance of common shares pursuant to the exercise of stock options (in shares)	10,500	27,500	2,500
Common Stock
Stock issued during period, new issue (in shares)	947,368	0	0
First Clover Leaf [Member]
Stock Issued During Period, Shares, Acquisitions	0	0	2,600,616
First BancTrust [Member]
Stock Issued During Period, Shares, Acquisitions	1,643,900	0	0
SCB Bancorp [Member]
Stock Issued During Period, Shares, Acquisitions	1,330,571	0	0

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash flows from operating activities:
Net income	$ 36,600	$ 26,684	$ 21,840
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	8,667	7,462	2,826
Depreciation, amortization and accretion, net	7,881	8,134	7,936
Change in cash surrender value of bank owned life insurance	(1,337)	(1,126)	(671)
Insured Event, Gain (Loss)	0	511	0
Stock-based compensation expense	294	954	384
Gains on investment securities, net	(901)	(616)	(1,192)
Loss (gain) on sales of other real property owned, net	132	667	(1)
Donation of building	0	0	653
Loss on write down of premises and equipment	30	11	28
Gain (Loss) on Sales of Loans, Net	0	(698)	0
Gains on sale of loans held for sale, net	(1,070)	(1,102)	(1,224)
Deferred income taxes	4,283	2,498	(2,388)
Increase in accrued interest receivable	(1,708)	(279)	(629)
Increase (decrease) in accrued interest payable	829	94	(84)
Origination of loans held for sale	(62,623)	(67,321)	(79,682)
Proceeds from sale of loans held for sale	63,210	68,573	80,699
(Increase) decrease in other assets	(4,266)	668	1,802
Increase (decrease) in other liabilities	(7,846)	666	(2,875)
Net cash provided by operating activities	42,175	46,154	27,422
Cash flows from investing activities:
Proceeds from maturities of certificates of deposit investments	1,486	12,958	25,245
Purchases of certificates of deposit investments	0	0	(12,958)
Proceeds from sales of securities available-for-sale	13,152	159,663	70,757
Proceeds from maturities of securities held-to-maturity	55,035	73,310	117,003
Proceeds from maturities of securities available-for-sale	0	0	83,000
Purchases of securities available-for-sale	(38,852)	(183,319)	(194,946)
Purchases of securities held-to-maturity	0	0	(71,557)
Net increase in loans	(96,665)	(123,931)	(106,608)
Proceeds from sale of premises and equipment	0	0	147
Purchases of premises and equipment	(3,112)	(1,274)	(695)
Proceeds from sales of other real property owned	1,606	5,559	793
Investment in bank owned life insurance	0	0	(25,000)
Capitalization of mortgage servicing rights	0	0	(14)
Proceeds from Life Insurance Policy	0	1,072	0
Cash received related to acquisition, net of cash and cash equivalents acquired	56,389	0	36,774
Net cash used in investing activities	(10,961)	(55,962)	(78,059)
Cash flows from financing activities:
Net (decrease) increase in deposits	(19,548)	(55,248)	60,632
(Decrease) Increase in repurchase agreements	15,762	(30,375)	33,658
Proceeds from FHLB advances	45,000	52,000	20,000
Repayment of FHLB advances	(35,000)	(32,000)	(15,000)
Proceeds from short-term debt	0	0	7,000
Repayment of short-term debt	0	(4,000)	(3,938)
Proceeds from long-term debt	0	0	15,000
Repayments of Long-term Debt	10,313	3,750	0
Proceeds from issuance of common stock	36,645	4,399	195
Direct expenses related to capital transactions	(2,309)	(216)	(229)
Purchase of treasury stock	(138)	(797)	0
Dividends paid on preferred stock	0	0	(1,286)
Dividends paid on common stock	(8,792)	(7,228)	(5,277)
Net cash provided by (used in) financing activities	21,307	(77,215)	110,755
Increase (decrease) in cash and cash equivalents	52,521	(87,023)	60,118
Cash and cash equivalents at beginning of period	88,879	175,902	115,784
Cash and cash equivalents at end of period	141,400	88,879	175,902
Cash paid during the period for:
Interest	11,671	6,415	4,113
Income taxes	9,645	11,721	13,135
Supplemental disclosures of noncash investing and financing activities
Loans transferred to other real estate owned	518	6,034	328
Dividends reinvested in common stock	1,099	1,057	1,323
Net tax benefit related to option and deferred compensation plans	160	221	140
Conversion of preferred stock	0	0	27,500
Noncash or Part Noncash Acquisition, Value of Liabilities Assumed [Abstract]
Fair value of assets acquired			668,905
Cash paid			22,545
Common stock issued			65,926
Total consideration paid			88,471
Fair value of liabilities assumed			$ 580,434

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Basis of Accounting and Consolidation The accompanying consolidated financial statements include the accounts of First Mid-Illinois Bancshares, Inc. (“Company”) and its wholly-owned subsidiaries: Mid-Illinois Data Services, Inc. (“MIDS”), First Mid Wealth Management, First Mid Bank & Trust, N.A. (“First Mid Bank”), Soy Capital Bank and Trust Company ("Soy Capital Bank"), and First Mid Insurance Group (“First Mid Insurance”). All significant intercompany balances and transactions have been eliminated in consolidation. Certain amounts in the prior year’s consolidated financial statements have been reclassified to conform to the 2018 presentation and there was no impact on net income or stockholders’ equity from these reclassifications. The Company operates as a single segment entity for financial reporting purposes. The accounting and reporting policies of the Company conform to accounting principles generally accepted in the United States of America. Following is a description of the more significant of these policies. Use of Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires the Company to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. The Company uses estimates and employs the judgments of management in determining the amount of its allowance for loan losses and income tax accruals and deferrals, in its fair value measurements of investment securities, and in the evaluation of impairment of loans, goodwill, investment securities, and premises and equipment. As with any estimate, actual results could differ from these estimates. Material estimates that are particularly susceptible to significant change relate to the determination of the allowance for loan losses. In connection with the determination of the allowance for loan losses, management obtains independent appraisals for significant properties. Fair Value Measurements The fair value of a financial instrument is defined as the amount at which the instrument could be exchanged in a current transaction between willing parties, other than in a forced or liquidation sale. The Company estimates the fair value of a financial instrument using a variety of valuation methods. Where financial instruments are actively traded and have quoted market prices, quoted market prices are used for fair value. When the financial instruments are not actively traded, other observable market inputs, such as quoted prices of securities with similar characteristics, may be used, if available, to determine fair value. When observable market prices do not exist, the Company estimates fair value. The Company’s valuation methods consider factors such as liquidity and concentration concerns. Other factors such as model assumptions, market dislocations, and unexpected correlations can affect estimates of fair value. Imprecision in estimating these factors can impact the amount of revenue or loss recorded. At the end of each quarter, the Company assesses the valuation hierarchy for each asset or liability measured. From time to time, assets or liabilities may be transferred within hierarchy levels due to changes in availability of observable market inputs to measure fair value at the measurement date. Transfers into or out of hierarchy levels are based upon the fair value at the beginning of the reporting period. A more detailed description of the fair values measured at each level of the fair value hierarchy can be found in Note 11 – “Disclosures of Fair Values of Financial Instruments.” Cash and Cash Equivalents For purposes of reporting cash flows, cash equivalents include non-interest bearing and interest bearing cash and due from banks and federal funds sold. Generally, federal funds are sold for one-day periods. Certificates of Deposit Investments Certificates of deposit investments have original maturities of three to five years and are carried at cost. Investment Securities The Company classifies its investments in debt securities as either held-to-maturity or available-for-sale in accordance with ASC 320. Securities classified as held-to-maturity are recorded at cost or amortized cost. Available-for-sale securities are carried at fair value. Fair value calculations are based on quoted market prices when such prices are available. If quoted market prices are not available, estimates of fair value are computed using a variety of techniques, including extrapolation from the quoted prices of similar instruments or recent trades for thinly traded securities, fundamental analysis, or through obtaining purchase quotes. Due to the subjective nature of the valuation process, it is possible that the actual fair values of these investments could differ from the estimated amounts, thereby affecting the financial position, results of operations and cash flows of the Company. If the estimated value of investments is less than the cost or amortized cost, the Company evaluates whether an event or change in circumstances has occurred that may have a significant adverse effect on the fair value of the investment. If such an event or change has occurred and the Company determines that the impairment is other-than-temporary, a further determination is made as to the portion of impairment that is related to credit loss. The impairment of the investment that is related to the credit loss is expensed in the period in which the event or change occurred. The remainder of the impairment is recorded in other comprehensive income. Loans Loans are stated at the principal amount outstanding net of unearned discounts, unearned income and the allowance for loan losses. Unearned income includes deferred loan origination fees reduced by loan origination costs and is amortized to interest income over the life of the related loan using methods that approximate the effective interest rate method. Interest on substantially all loans is credited to income based on the principal amount outstanding. The Company’s policy is to discontinue the accrual of interest income on any loan that becomes ninety days past due as to principal or interest or earlier when, in the opinion of management there is reasonable doubt as to the timely collection of principal or interest. Nonaccrual loans are returned to accrual status when, in the opinion of management, the financial position of the borrower indicates there is no longer any reasonable doubt as to the timely collectability of interest or principal. Loans expected to be sold are classified as held for sale in the consolidated financial statements and are recorded at the lower of aggregate cost or market value, taking into consideration future commitments to sell the loans. Allowance for Loan Losses The Company believes the allowance for loan losses is the critical accounting policy that requires the most significant judgments and assumptions used in the preparation of its consolidated financial statements. An estimate of potential losses inherent in the loan portfolio is determined and an allowance for those losses is established by considering factors including historical loss rates, expected cash flows and estimated collateral values. In assessing these factors, the Company uses organizational history and experience with credit decisions and related outcomes. The allowance for loan losses represents the best estimate of losses inherent in the existing loan portfolio. The allowance for loan losses is increased by the provision for loan losses charged to expense and reduced by loans charged off, net of recoveries. The Company evaluates the allowance for loan losses quarterly. If the underlying assumptions later prove to be inaccurate based on subsequent loss evaluations, the allowance for loan losses is adjusted. The Company estimates the appropriate level of allowance for loan losses by separately evaluating impaired and nonimpaired loans. A specific allowance is assigned to an impaired loan when expected cash flows or collateral do not justify the carrying amount of the loan. The methodology used to assign an allowance to a nonimpaired loan is more subjective. Generally, the allowance assigned to nonimpaired loans is determined by applying historical loss rates to existing loans with similar risk characteristics, adjusted for qualitative factors including the volume and severity of identified classified loans, changes in economic conditions, changes in credit policies or underwriting standards, and changes in the level of credit risk associated with specific industries and markets. Because the economic and business climate in any given industry or market, and its impact on any given borrower, can change rapidly, the risk profile of the loan portfolio is continually assessed and adjusted when appropriate. Notwithstanding these procedures, there still exists the possibility that the assessment could prove to be significantly incorrect and that an immediate adjustment to the allowance for loan losses would be required. The Company has loans acquired from business combinations with uncollected principal balances. These loans are carried net of a fair value adjustment for credit risk and interest rates and are only included in the allowance calculation to the extent that the reserve requirement exceeds the fair value adjustment. However, as the acquired loans renew, it is necessary to establish an allowance which represents an amount that, in management's opinion, will be adequate to absorb probable credit losses inherent in such loans. Premises and Equipment Premises and equipment are stated at cost less accumulated depreciation and amortization. Depreciation and amortization is charged to expense and determined principally by the straight-line method over the estimated useful lives of the assets. The estimated useful lives for each major depreciable classification of premises and equipment are as follows: Buildings and improvements 20 years to 40 years Leasehold improvements 5 years to 15 years Furniture and equipment 3 years to 7 years Goodwill and Intangible Assets The Company has goodwill from business combinations, identifiable intangible assets assigned to core deposit relationships and customer lists acquired, and intangible assets arising from the rights to service mortgage loans for others. Identifiable intangible assets generally arise from branches acquired that the Company accounted for as purchases. Such assets consist of the excess of the purchase price over the fair value of net assets acquired, with specific amounts assigned to core deposit relationships and customer lists primarily related to insurance agency. Intangible assets are amortized by the straight-line method over various periods up to fifteen years. Management reviews intangible assets for possible impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. In accordance with the provisions of SFAS No. 142, “ Goodwill and Other Intangible Assets ,” codified into ASC 350, the Company performed testing of goodwill for impairment as of September 30, 2018 and determined that, as of that date, goodwill was not impaired. Management also concluded that the remaining amounts and amortization periods were appropriate for all intangible assets. Other Real Estate Owned Other real estate owned acquired through loan foreclosure is initially recorded at fair value less costs to sell when acquired, establishing a new cost basis. The adjustment at the time of foreclosure is recorded through the allowance for loan losses. Due to the subjective nature of establishing the fair value when the asset is acquired, the actual fair value of the other real estate owned or foreclosed asset could differ from the original estimate. If it is determined that fair value temporarily declines subsequent to foreclosure, a valuation allowance is recorded through noninterest expense. Operating costs associated with the assets after acquisition are also recorded as noninterest expense. Gains and losses on the disposition of other real estate owned and foreclosed assets are netted and posted to other noninterest expense. Bank Owned Life Insurance First Mid Bank and Soy Capital Bank have purchased life insurance policies on certain senior management. Bank owned life insurance is recorded at the amount that can be realized under the insurance contract at the balance sheet date, which is the cash surrender value adjusted for other charges or other amounts that are probable at settlement. Federal Home Loan Bank Stock Federal Home Loan Bank stock is a required investment for institutions that are members of the Federal Home Loan Bank system. The required investment in the common stock is based on a predetermined formula. Income Taxes The Company and its subsidiaries file consolidated federal and state income tax returns with each organization computing its taxes on a separate company basis. Amounts provided for income tax expense are based on income reported for financial statement purposes rather than amounts currently payable under tax laws. Deferred tax assets and liabilities are recognized for future tax consequences attributable to the temporary differences existing between the financial statement carrying amounts of assets and liabilities and their respective tax basis, as well as operating loss and tax credit carry forwards. To the extent that current available evidence about the future raises doubt about the realization of a deferred tax asset, a valuation allowance is established. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized as an increase or decrease in income tax expense in the period in which such change is enacted. On December 22, 2017, the United States enacted certain tax reforms through the Tax Cuts and Jobs Act , which changes existing tax laws, most significantly a change in the statutory corporate tax rate from 35% to 21%. As a result of this enactment, the Company incurred additional one-time income tax expense of approximately $1.4 million during the fourth quarter of 2017, primarily due to remeasurement of deferred tax assets and liabilities. Additionally, the Company reviews its uncertain tax positions annually under FASB Interpretation No. 48 (FIN No. 48), “ Accounting for Uncertainty in Income Taxes ,” codified within ASC 740. An uncertain tax position is recognized as a benefit only if it is "more likely than not" that the tax position would be sustained in a tax examination, with a tax examination being presumed to occur. The amount actually recognized is the largest amount of tax benefit that is greater than 50% likely to be recognized on examination. For tax positions not meeting the "more likely than not" test, no tax benefit is recorded. A significant amount of judgment is applied to determine both whether the tax position meets the "more likely than not" test as well as to determine the largest amount of tax benefit that is greater than 50% likely to be recognized. Differences between the position taken by management and that of taxing authorities could result in a reduction of a tax benefit or increase to tax liability, which could adversely affect future income tax expense. Trust Department Assets Assets held in fiduciary or agency capacities are not included in the consolidated balance sheets since such items are not assets of the Company or its subsidiaries. Fees from trust activities are recorded on a cash basis over the period in which the service is provided. Fees are a function of the market value of assets managed and administered, the volume of transactions, and fees for other services rendered, as set forth in the underlying client agreement with the Trust & Wealth Management Division of First Mid Bank. This revenue recognition involves the use of estimates and assumptions, including components that are calculated based on asset valuations and transaction volumes. Any out of pocket expenses or services not typically covered by the fee schedule for trust activities are charged directly to the trust account on a gross basis as trust revenue is incurred. At December 31, 2018 , the Company managed or administered 1,141 accounts with assets totaling approximately $1,129.6 million . At December 31, 2017 , the Company managed or administered 1,119 accounts with assets totaling approximately $997.8 million . Treasury Stock Treasury stock is stated at cost. Cost is determined by the first-in, first-out method. Stock Incentive Awards At the Annual Meeting of Stockholders held April 26, 2017, the stockholders approved the 2017 Stock Incentive Plan ("SI Plan"). The SI Plan was implemented to succeed the Company's 2007 Stock Incentive Plan, which had a ten-year term. The SI Plan is intended to provide a means whereby directors, employees, consultants and advisors of the Company and its Subsidiaries may sustain a sense of proprietorship and personal involvement in the continued development and financial success of the Company and its Subsidiaries, thereby advancing the interests of the Company and its stockholders. Accordingly, directors and selected employees, consultants and advisors may be provided the opportunity to acquire shares of Common Stock of the Company on the terms and conditions established in the SI Plan. A maximum of 149,983 shares of common stock may be issued under the SI Plan. The Company awarded 28,700 , 18,391 , and 13,912 shares during 2018, 2017, and 2016 (under the 2007 Stock Incentive Plan), respectively as stock and stock unit awards. Employee Stock Purchase Plan At the Annual Meeting of Stockholders held April 25, 2018, the stockholders approved the First Mid-Illinois Bancshares, Inc. Employee Stock Purchase Plan (“ESPP”). The ESPP is intended to promote the interests of the Company by providing eligible employees with the opportunity to purchase shares of common stock of the Company at a 5% discount through payroll deductions. The ESPP is also intended to qualify as an employee stock purchase plan under Section 423 of the Internal Revenue Code. A maximum of 600,000 shares of common stock may be issued under the ESPP. General Litigation The Company is subject to claims and lawsuits that arise primarily in the ordinary course of business. It is the opinion of management that the disposition or ultimate resolution of such claims and lawsuits will not have a material adverse effect on the consolidated financial position, results of operations and cash flows of the Company. Revenue Recognition Accounting Standards Codification 606, Revenue from Contracts with Customers (“ASC 606”), establishes a revenue recognition model for reporting information about the nature, amount, timing and uncertainty of revenue and cash flows arising from the entity's contracts to provide goods or services to customers. Most of the Company’s revenue-generating transactions are not subject toASC 606, including revenue generated from financial instruments, such as loans and investment securities, and revenue related to mortgage servicing activities, which are subject to other accounting standards. A description ofthe revenue-generating activities that are within the scope ofASC 606, and included in other income in the Company’s condensed consolidated statements of income are as follows: Trust revenues. The Company generates fee income from providing fiduciary services through its trust department. Fees are billed in arrears based upon the preceding period account balance. Revenue from the farm management department is recorded when service is complete, for example when crops are sold. Brokerage commissions. The primary brokerage revenue is recorded at the beginning of each quarter through billing to customers based on the account asset size on the last day of the previous quarter. If a withdrawal of funds takes place, a prorated refund may occur; this is reflected within the same quarter as the original billing occurred. All performance obligations are met within the same quarter that the revenue is recorded. Insurance commissions. The Company’s insurance agency subsidiary, First Mid Insurance Group (“FMIG”), receives commissions on premiums ofnew and renewed business policies. FMIG records commission revenue on direct bill policies as the cash is received. For agency bill policies, FMIG retains its commission portion of the customer premium payment and remits the balance to the carrier. In both cases, the entire performance obligation is held by the carriers. Service charges on deposits. The Company generates revenue from fees charged for deposit account maintenance, overdrafts, wire transfers, and check fees. The revenue related to deposit fees is recognized at the time the performance obligation is satisfied. ATM/debit card revenue. The Company generates revenue through service charges on the use of its ATM machines and interchange income from the use of Company issued credit and debit cards. The revenue is recognized at the time the service is used and the performance obligation is satisfied. Other income. Treasury management fees and lock box fees are received and recorded after the service performance obligation is completed. Merchant bank card fees are received from various vendors, however the performance obligation is with the vendors. The Company records gains on the sale ofloans and the sale ofOREO properties after the transactions are complete and transfer of ownership has occurred. As each of the Company’s facilities is located in markets with similar economies, no disaggregation of revenue is necessary. Adoption of New Accounting Guidance Accounting Standards Update 2017-09, Compensation-Stock Compensation (Topic 718): Scope of Modification ("ASU 2017-09"). In May 2017, FASB issued ASU 2017-09. This update provides guidance on determining which changes to the terms and conditions of share-based payment awards require the application of modification accounting under Topic 718. The guidance is effective for public companies for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2017. Early adoption is permitted, including adoption in an interim period. The amendments should be applied on a prospective basis to an award modified on or after adoption date. The Company adopted ASU 2017-09 on January 1, 2018. The update did not have an impact on the Company's consolidated financial statement. Accounting Standards Update 2017-08, Receivables-Nonrefundable Fees and Other Costs ("ASU 2017-08"). In March 2017, FASB issued ASU 2017-08. This update amends the amortization period for certain purchased callable debt securities held at a premium. The update shortens the premium's amortization period to the earliest call date to more closely align the amortization period of premiums to expectations incorporated in market pricing on the underlying securities. For public companies, the update is effective for annual periods beginning after December 15, 2018, and is to be applied on a modified retrospective basis with a cumulative-effect adjustment directly to retained earnings as of the beginning of the adoption period. Early adoption is permitted, including adoption in an interim period. The Company has adopted ASU 2017-08 early and there was not a significant impact on the Company's consolidated financial statements. Accounting Standards Update 2017-04, Intangibles-Goodwill and Other (Topic 350: Simplifying the Test for Goodwill Impairment ("ASU 2017-04"). In January 2017, FASB issued ASU 2017-04. The amendments in this update simplify the measurement of goodwill by eliminating Step 2 from the goodwill impairment test. Under this guidance, an entity should perform its annual, or interim, goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount. An entity should recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit's fair value; however, the loss should not exceed the total amount of goodwill allocated to that reporting unit. ASU 2017-04 is effective for public companies for the reporting periods beginning after December 15, 2019. Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. Although the Company cannot anticipate future goodwill impairment, based on the most recent assessment, it is unlikely that an impairment amount would need to be calculated and, therefore, does not anticipate a material impact on the Company's financial statements. The current accounting policies and procedures of the Company are not anticipated to change, except for the elimination of Step 2 analysis. Accounting Standards Update 2016-08, Revenue from Contracts with Customers (Topic 606) (“ASU 2016-08"). In March 2016, the FASB issued ASU 2016-08 which amended the accounting guidance issued by the FASB in May 2014 that revised the criteria for determining when to recognize revenue from contracts with customers and expanded disclosure requirements. The amendment defers the effective date by one year. This accounting guidance can be implemented using either a retrospective method or a cumulative-effect approach. This new guidance will be effective for interim and annual reporting periods beginning after December 15, 2017. The Company completed its overall assessment of revenue streams and review of related contracts potentially affected by the ASU, including trust and asset management fees, deposit related fees, interchange fees, merchant income, and annuity and insurance commissions. Based on this assessment, the Company concluded that ASU 2014-09 did not materially change the method in which the Company currently recognizes revenue for these revenue streams. Accounting Standards Update 2016-02, Leases (Topic 842)("ASU 2016-02"). On February 25, 2016, FASB issued ASU 2016-02 which creates Topic 842, Leases and supersedes Topic 840, Leases. ASU 2016-02 is intended to improve financial reporting about leasing transactions, by increasing transparency and comparability among organizations. Under the new guidance, a lessee is required to record all leases with lease terms of more than 12 months on their balance sheet as lease liabilities with a corresponding right-of-use asset. ASU 2016-02 maintains the dual model for lease accounting, requiring leases to be classified as either operating or finance, with lease classification determined in a manner similar to existing lease guidance. The new guidance is effective for public companies for fiscal years beginning on or after December 15, 2018, and for private companies for fiscal years beginning on or after December 15, 2019. The Company will adopt the guidance effective January 1, 2019 and estimates it will record a right of use asset of $14.1 million and a lease liability of $14.1 million. The Company does not expect the new guidance will have a material impact on its consolidated statement of income. Accounting Standards Update 2016-01, Financial Instruments (Topic 825): Recognition and Measurement of Financial Assets and Financial Liabilities ("ASU 2016-01"). In January 2016, FASB issued ASU 2016-01 which amends prior guidance to require an entity to measure its equity investments (except those accounted for under the equity method of accounting) to be measured at fair value with changes in fair value recognized in net income. An entity may choose to measure equity investments that do not have readily determinable fair values at cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for the identical or similar investment of same issuer. The new guidance simplifies the impairment assessment of equity investments without readily determinable fair values, requires public entities to use the exit price notion when measuring fair value of financial instruments for disclosure purposes, requires an entity to present separately in other comprehensive income the portion of the total change in fair value of a liability resulting from changes in the instrument-specific credit risk when the entity has selected fair value option for financial instruments and requires separate presentation of financial assets and liabilities by measurement category and form of financial asset. The Company adopted ASU 2016-01 on January 1, 2018. Accordingly, the Company refined the calculation used to determine the disclosed fair value of loans held for investments as part of adopting this standard. The Adoption of this standard did not have a significant impact on the fair value disclosures included in NOTE 11. Accounting Standards Update 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses of Financial Instruments (“ASU 2016-13”). In June 2016, FASB issued ASU 2016-13. The provisions of ASU 2016-13 requires an entity to utilize a new impairment model known as the current expected credit loss ("CECL") model to estimate its lifetime "expected credit loss" and record an allowance that, when deducted from the amortized cost basis of the financial asset, presents the net amount expected to be collected on the financial asset. The CECL model is expected to result in more timely recognition of credit losses. ASU 2016-13 also requires new disclosures for financial assets measured at amortized cost, loans and available-for-sale debt securities. ASU 2016-13 is effective for annual periods beginning after December 15, 2019, including interim periods within those fiscal years. Entities will apply the standard's provisions as a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is adopted. Management has formed an internal, cross functional committee to evaluate implementation steps and assess the impact ASU 2016-13 will have on the Company’s consolidated financial statements. The committee has assigned roles and responsibilities, key tasks to complete, and has established a general timeline for implementation. The Company also engaged an outside consultant to assist with the methodology review and data validation, as well as other key aspects of implementing the standard. The committee meets periodically to discuss the latest developments and ensure progress is being made and also keeps current on evolving interpretations and industry practices related to ASU 2016-13. The committee continues to evaluate and validate data resources and different loss methodologies. Key implementation activities for 2019 include finalization of models, establishing processes and controls, development of supporting analytics and documentation, policies and disclosure, and implementing parallel processing. The committee is still evaluating the impact ASU 2016-13 will have on the Company's consolidated financial statements. Accounting Standards Update 2018-13, Fair Value Measurements (Topic 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement (“ASU 2018-13”). In August 2018, FASB issued ASU 2018-13. This ASU eliminates, adds and modifies certain disclosure requirements for fair value measurements. Among the changes, an entity will no longer be required to disclose the amount of and reasons for transfers between Level 1 and Level 2 of the fair value hierarchy, but will be required to disclose the range and weighted average used to develop significant unobservable inputs for Level 3 fair value measurements. ASU 2018-13 is effective for interim and annual reporting periods beginning after December 15, 2019; early adoption is permitted. As ASU 2018-13 only revises disclosure requirements, it will not have a material impact on the Company’s consolidated financial statements. Accumulated Other Comprehensive Income (Loss) The components of accumulated other comprehensive income (loss) included in stockholders’ equity as of December 31, 2018 and 2017 are as follows (in thousands): Unrealized Gain (Loss) on Securities Securities with Other-Than-Temporary Impairment Losses Total December 31, 2018 Net unrealized losses on securities available-for-sale $ (8,951 ) $ — $ (8,951 ) Unamortized losses on securities held-to-maturity transferred from available-for-sale (166 ) — (166 ) Securities with other-than-temporary impairment losses — — — Tax benefit 2,644 — 2,644

Earnings Per Share

Earnings Per Share	12 Months Ended
	Dec. 31, 2018
Earnings Per Share [Abstract]
Earnings Per Share [Text Block]	Basic net income per common share available to common stockholders is calculated as net income less preferred stock dividends divided by the weighted average number of common shares outstanding. Diluted net income per common share available to common stockholders is computed using the weighted average number of common shares outstanding, increased by the assumed conversion of the Company’s convertible preferred stock and the Company’s stock options and restricted stock awarded, unless anti-dilutive. The components of basic and diluted net income per common share available to common stockholders for the years ended December 31, 2018, 2017 and 2016 were as follows: 2018 2017 2016 Basic Net Income per Common Share Available to Common Stockholders: Net income $ 36,600,000 $ 26,684,000 $ 21,840,000 Preferred stock dividends — — (825,000 ) Net income available to common stockholders 36,600,000 26,684,000 21,015,000 Weighted average common shares outstanding 14,487,126 12,531,659 10,149,099 Basic earnings per common share $ 2.53 $ 2.13 $ 2.07 Diluted Net Income per Common Share Available to Common Stockholders: Net income available to common stockholders $ 36,600,000 $ 26,684,000 $ 21,015,000 Effect of assumed preferred stock conversion — — 825,000 Net income applicable to diluted earnings per share 36,600,000 26,684,000 21,840,000 Weighted average common shares outstanding 14,487,126 12,531,659 10,149,099 Dilutive potential common shares: Assumed conversion of stock options 209 4,875 3,111 Restricted stock awarded 13,250 — 4,107 Assumed conversion of preferred stock — — 507,393 Dilutive potential common shares 13,459 4,875 514,611 Diluted weighted average common shares outstanding 14,500,585 12,536,534 10,663,710 Diluted earnings per common share $ 2.52 $ 2.13 $ 2.05 There were no shares not considered in computing diluted earnings per share for the years ended December 31, 2018, 2017 and 2016 .

Cash and Due from Banks

Cash and Due from Banks	12 Months Ended
	Dec. 31, 2018
Cash and Cash Equivalents [Abstract]
Cash and Due from Banks [Text Block]	Cash and Due from Banks Aggregate cash and due from bank balances of $14,564,000 , $8,944,000 and $16,643,000 were maintained in satisfaction of statutory reserve requirements of the Federal Reserve Bank at December 31, 2018, 2017 and 2016 , respectively. At December 31, 2018 , the Company's cash accounts exceeded federal insurance limits by $1,906,000 .

Investment Securities

Investment Securities	12 Months Ended
	Dec. 31, 2018
Investments, Debt and Equity Securities [Abstract]
Investment Securities	The amortized cost, gross unrealized gains and losses and estimated fair values for available-for-sale and held-to-maturity securities by major security type at December 31, 2018 and December 31, 2017 were as follows (in thousands): December 31, 2018 Amortized Cost Gross Unrealized Gains Gross Unrealized (Losses) Fair Value Available-for-sale: U.S. Treasury securities and obligations of U.S. government corporations & agencies $ 201,380 $ 504 $ (3,235 ) $ 198,649 Obligations of states and political subdivisions 193,195 1,224 (1,840 ) 192,579 Mortgage-backed securities: GSE residential 304,372 486 (6,186 ) 298,672 Other securities 2,278 96 — 2,374 Total available-for-sale $ 701,225 $ 2,310 $ (11,261 ) $ 692,274 Held-to-maturity: U.S. Treasury securities and obligations of U.S. government corporations & agencies $ 69,436 $ — $ (1,527 ) $ 67,909 December 31, 2017 Available-for-sale: U.S. Treasury securities and obligations of U.S. government corporations & agencies $ 115,796 $ 8 $ (2,034 ) $ 113,770 Obligations of states and political subdivisions 165,037 2,254 (1,025 ) 166,266 Mortgage-backed securities: GSE residential 295,778 493 (2,460 ) 293,811 Trust preferred securities 2,893 — (345 ) 2,548 Other securities 2,039 145 — 2,184 Total available-for-sale $ 581,543 $ 2,900 $ (5,864 ) $ 578,579 Held-to-maturity: U.S. Treasury securities and obligations of U.S. government corporations & agencies $ 69,332 $ 103 $ (978 ) $ 68,457 Trust preferred securities at December 31, 2017, is a trust preferred pooled security issued by First Tennessee Financial (“FTN”). The unrealized loss of this security, which had a maturity of twenty years, was primarily due to its long-term nature, a lack of demand or inactive market for the security, and concerns regarding the underlying financial institutions that have issued the trust preferred security. This security was sold during 2018. See the heading “Trust Preferred Securities” below for further information regarding this security. Proceeds from sales of investment securities, realized gains and losses and income tax expense were as follows during the years ended December 31, 2018, 2017 and 2016 (in thousands): 2018 2017 2016 Proceeds from sales $ 13,152 $ 159,663 $ 70,757 Gross gains 941 773 1,192 Gross losses (40 ) (157 ) — Income tax expense 261 216 465 The following table indicates the expected maturities of investment securities classified as available-for-sale presented at fair value, and held-to-maturity presented at amortized cost at December 31, 2018 and the weighted average yield for each range of maturities (in thousands): One year or less After 1 through 5 years After 5 through 10 years After ten years Total Available-for-sale: U.S. Treasury securities and obligations of U.S. government corporations and agencies $ 148,656 $ 49,993 $ — $ — $ 198,649 Obligations of state and political subdivisions 23,282 89,930 78,294 1,073 192,579 Mortgage-backed securities: GSE residential 622 160,900 137,150 — 298,672 Other securities — 2,010 — 364 2,374 Total investments $ 172,560 $ 302,833 $ 215,444 $ 1,437 $ 692,274 Weighted average yield 2.57 % 2.83 % 2.93 % 3.10 % 2.80 % Full tax-equivalent yield 2.70 % 3.14 % 3.34 % 4.14 % 3.10 % Held-to-maturity: U.S. Treasury securities and obligations of U.S. government corporations and agencies $ 39,995 $ 29,441 $ — $ — $ 69,436 Weighted average yield 1.76 % 2.08 % — % — % 1.90 % Full tax-equivalent yield 1.76 % 2.08 % — % — % 1.90 % The weighted average yields are calculated on the basis of the amortized cost and effective yields weighted for the scheduled maturity of each security. Tax-equivalent yields have been calculated using a 21% tax rate. With the exception of obligations of the U.S. Treasury and other U.S. government agencies and corporations, there were no investment securities of any single issuer, the book value of which exceeded 10% of stockholders' equity at December 31, 2018 . Investment securities carried at approximately $628 million and $479 million at December 31, 2018 and 2017 , respectively, were pledged to secure public deposits and repurchase agreements and for other purposes as permitted or required by law. The following table presents the aging of gross unrealized losses and fair value by investment category as of December 31, 2018 and 2017 (in thousands): Less than 12 months 12 months or more Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses December 31, 2018 Available-for-sale: U.S. Treasury securities and obligations of U.S. government corporations and agencies $ 16,095 $ (148 ) $ 105,549 $ (3,087 ) $ 121,644 $ (3,235 ) Obligations of states and political subdivisions 38,782 (450 ) 42,741 (1,390 ) 81,523 (1,840 ) Mortgage-backed securities: GSE residential 81,435 (1,150 ) 171,321 (5,036 ) 252,756 (6,186 ) Total $ 136,312 $ (1,748 ) $ 319,611 $ (9,513 ) $ 455,923 $ (11,261 ) Held-to-maturity: U.S. Treasury securities and obligations of U.S. government corporations and agencies $ 19,683 $ (147 ) $ 48,226 $ (1,380 ) $ 67,909 $ (1,527 ) December 31, 2017 U.S. Treasury securities and obligations of U.S. government corporations and agencies $ 58,584 $ (540 ) $ 47,972 $ (1,494 ) $ 106,556 $ (2,034 ) Obligations of states and political subdivisions 42,618 (769 ) 9,267 (256 ) 51,885 (1,025 ) Mortgage-backed securities: GSE residential 187,949 (1,942 ) 22,609 (518 ) 210,558 (2,460 ) Trust preferred securities — — 2,548 (345 ) 2,548 (345 ) Total $ 289,151 $ (3,251 ) $ 82,396 $ (2,613 ) $ 371,547 $ (5,864 ) Held-to-maturity: U.S. Treasury securities and obligations of U.S. government corporations and agencies $ 34,101 $ (525 ) $ 14,540 $ (453 ) $ 48,641 $ (978 ) U.S. Treasury Securities and Obligations of U.S. Government Corporations and Agencies. At December 31, 2018 , there were twenty-three available-for-sale U.S. Treasury securities and obligations of U.S. government corporations and agencies with a fair value of $105,549,000 and unrealized losses of $3,087,000 in a continuous unrealized loss position for twelve months or more. At December 31, 2017, there were eleven available-for-sale U.S. Treasury securities and obligations of U.S. government corporations and agencies with a fair value of $47,972,000 and unrealized losses of $1,494,000 in a continuous unrealized loss position for twelve months or more. At December 31, 2018 there were nine held-to-maturity U.S. Treasury securities and obligations of U.S. government corporations and agencies with a fair value of $48,226,000 and unrealized losses of $1,380,000 in a continuous unrealized loss position for twelve months or more. At December 31, 2017 there were seven held-to maturity U.S. Treasury securities and obligations of U.S. government corporations and agencies with a fair value of $14,540,000 and unrealized losses of $453,000 in a continuous unrealized loss position for twelve months or more. Obligations of states and political subdivisions. At December 31, 2018 there were eighty-four obligations of states and political subdivisions with a fair value of $42,741,000 and unrealized losses of $1,390,000 in a continuous unrealized loss position for twelve months or more. At December 31, 2017 , there were thirty-nine obligations of states and political subdivisions with a fair value of $9,267,000 and unrealized losses of $256,000 in a continuous unrealized loss position for twelve months or more. Mortgage-backed Securities: GSE Residential. At December 31, 2018 there were sixty-nine mortgage-backed securities with a fair value of $171,321,000 and unrealized losses of $5,036,000 in a continuous unrealized loss position for twelve months or more. At December 31, 2017 , there were twenty-six mortgage-backed security with a fair value of $22,609,000 and unrealized losses of $518,000 in a continuous unrealized loss position for twelve months or more. Trust Preferred Securities. At December 31, 2017 , there was one trust preferred securities with a fair value of $2,548,000 and unrealized losses of $345,000 in a continuous unrealized loss position for twelve months or more. These unrealized losses were primarily due to the long-term nature of the trust preferred securities, a lack of demand or inactive market for these securities, the impending change to the regulatory treatment of these securities, and concerns regarding the underlying financial institutions that have issued the trust preferred securities. The Company sold this security during 2018. Other secu rities. At December 31, 2018 or 2017 there were no other securities in a continuous unrealized loss position for twelve months or more. The Company does not believe any other individual unrealized loss as of December 31, 2018 represents OTTI. However, given the continued disruption in the financial markets, the Company may be required to recognize OTTI losses in future periods with respect to its available for sale investment securities portfolio. The amount and timing of any additional OTTI will depend on the decline in the underlying cash flows of the securities. Should the impairment of any of these securities become other-than-temporary, the cost basis of the investment will be reduced and the resulting loss recognized in the period the other-than-temporary impairment is identified. Other-than-temporary Impairment Upon acquisition of a security, the Company determines whether it is within the scope of the accounting guidance for investments in debt and equity securities or whether it must be evaluated for impairment under the accounting guidance for beneficial interests in securitized financial assets. Credit Losses Recognized on Investments As described above, the Company’s investments in trust preferred securities experienced fair value deterioration due to credit losses but were not otherwise other-than-temporarily impaired. The following table provides information about those trust preferred securities for which only a credit loss was recognized in income and other losses were recorded in other comprehensive income (loss) for the years ended December 31, 2018, 2017 and 2016 (in thousands). Accumulated Credit Losses as of December 31: 2018 2017 2016 Credit losses on trust preferred securities held: Beginning of period $ 1,111 $ 1,111 $ 1,111 Additions related to OTTI losses not previously recognized — — — Reductions due to sales / (recoveries) (1,111 ) — — Reductions due to change in intent or likelihood of sale — — — Additions related to increases in previously recognized OTTI losses — — — Reductions due to increases in expected cash flows — — — End of period $ — $ 1,111 $ 1,111 Maturities of investment securities were as follows at December 31, 2018 (in thousands): Amortized Cost Estimated Fair Value Available-for-sale: Due in one year or less $ 174,049 $ 171,938 Due after one-five years 142,357 141,933 Due after five-ten years 79,095 78,294 Due after ten years 1,352 1,437 396,853 393,602 Mortgage-backed securities: GSE residential 304,372 298,672 Total available-for-sale 701,225 692,274 Held-to-maturity: Due in one year or less 39,995 38,790 Due after one-five years 29,441 29,119 Due after five-ten years — — Due after ten years — — Total held-to-maturity $ 69,436 $ 67,909 Expected maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.

Loans and Allowance for Loan Lo

Loans and Allowance for Loan Losses	12 Months Ended
	Dec. 31, 2018
Receivables [Abstract]
Loans and Allowance for Loan Losses	90 days & Accruing December 31, 2018 Construction and land development $ 460 $ 43 $ — $ 503 $ 50,116 $ 50,619 $ — Farm loans — 804 — 804 230,896 231,700 — 1-4 Family residential properties 3,347 3,051 4,080 10,478 363,040 373,518 — Multifamily residential properties 1,149 — 1,955 3,104 180,947 184,051 — Commercial real estate 1,349 89 4,058 5,496 901,354 906,850 — Loans secured by real estate 6,305 3,987 10,093 20,385 1,726,353 1,746,738 — Agricultural loans 63 — 20 83 135,794 135,877 — Commercial and industrial loans 1,417 10 3,902 5,329 551,682 557,011 — Consumer loans 888 356 299 1,543 89,973 91,516 — All other loans 697 — — 697 112,680 113,377 — Total loans $ 9,370 $ 4,353 $ 14,314 $ 28,037 $ 2,616,482 $ 2,644,519 $ — December 31, 2017 Construction and land development $ 26 $ 48 $ — $ 74 $ 107,520 $ 107,594 $ — Farm loans — — 396 396 126,787 127,183 — 1-4 Family residential properties 3,023 538 1,767 5,328 288,339 293,667 — Multifamily residential properties — — — — 61,798 61,798 — Commercial real estate 90 38 3,566 3,694 678,063 681,757 — Loans secured by real estate 3,139 624 5,729 9,492 1,262,507 1,271,999 — Agricultural loans — 32 158 190 86,441 86,631 — Commercial and industrial loans 192 3 770 965 443,298 444,263 — Consumer loans 178 67 27 272 29,477 29,749 — All other loans — — — — 106,859 106,859 — Total loans $ 3,509 $ 726 $ 6,684 $ 10,919 $ 1,928,582 $ 1,939,501 $ — Impaired Loans Within all loan portfolio segments, loans are considered impaired when, based on current information and events, it is probable the Company will be unable to collect all amounts due from the borrower in accordance with the contractual terms of the loan. The entire balance of a loan is considered delinquent if the minimum payment contractually required to be made is not received by the specified due date. Impaired loans, excluding certain troubled debt restructured loans, are placed on nonaccrual status. Impaired loans include nonaccrual loans and loans modified in troubled debt restructurings where concessions have been granted to borrowers experiencing financial difficulties. These concessions could include a reduction in the interest rate on the loan, payment extensions, forgiveness of principal, forbearance or other actions intended to maximize collection. It is the Company’s policy to have any restructured loans which are on nonaccrual status prior to being modified remain on nonaccrual status until, in the opinion of management, the financial position of the borrower indicates there is no longer any reasonable doubt as to the timely collection of interest or principal. If the restructured loan is on accrual status prior to being modified, the loan is reviewed to determine if the modified loan should remain on accrual status. The following tables present impaired loans as of December 31, 2018 and 2017 (in thousands): 2018 2017 Recorded Balance Unpaid Principal Balance Specific Allowance Recorded Balance Unpaid Principal Balance Specific Allowance Loans with a specific allowance: Construction and land development $ 2,559 $ 2,559 $ 14 $ — $ — $ — Farm loans — — — 276 276 — 1-4 Family residential properties 4,565 4,952 234 1,026 1,347 25 Multifamily residential properties 4,465 4,465 — 313 313 — Commercial real estate 12,517 12,804 1,553 5,544 5,565 531 Loans secured by real estate 24,106 24,780 1,801 7,159 7,501 556 Agricultural loans 36 504 — 212 1,009 2 Commercial and industrial loans 8,292 8,723 1,475 5,774 6,037 64 Consumer loans 169 171 3 200 200 1 All other loans — — — — — — Total loans $ 32,603 $ 34,178 $ 3,279 $ 13,345 $ 14,747 $ 623 Loans without a specific allowance: Construction and land development $ 48 $ 48 $ — $ — $ — $ — Farm loans 309 309 — 15 15 — 1-4 Family residential properties 3,680 4,769 — 2,239 2,664 — Multifamily residential properties 7,597 7,597 — 55 55 — Commercial real estate 983 1,201 — 303 368 — Loans secured by real estate 12,617 13,924 — 2,612 3,102 — Agricultural loans 631 163 — 545 — — Commercial and industrial loans 1,660 2,027 — 909 1,249 — Consumer loans 471 1,006 — 102 119 — All other loans 6 6 — — — — Total loans $ 15,385 $ 17,126 $ — $ 4,168 $ 4,470 $ — Total loans: Construction and land development $ 2,607 $ 2,607 $ 14 $ — $ — $ — Farm loans 309 309 — 291 291 — 1-4 Family residential properties 8,245 9,721 234 3,265 4,011 25 Multifamily residential properties 12,062 12,062 — 368 368 — Commercial real estate 13,500 14,005 1,553 5,847 5,933 531 Loans secured by real estate 36,723 38,704 1,801 9,771 10,603 556 Agricultural loans 667 667 — 757 1,009 2 Commercial and industrial loans 9,952 10,750 1,475 6,683 7,286 64 Consumer loans 640 1,177 3 302 319 1 All other loans 6 6 — — — — Total loans $ 47,988 $ 51,304 $ 3,279 $ 17,513 $ 19,217 $ 623 The Company’s policy is to discontinue the accrual of interest income on all loans for which principal or interest is ninety days past due. The accrual of interest is discontinued earlier when, in the opinion of management, there is reasonable doubt as to the timely collection of interest or principal. Once interest accruals are discontinued, accrued but uncollected interest is charged against current year income. Subsequent receipts on non-accrual loans are recorded as a reduction of principal, and interest income is recorded only after principal recovery is reasonably assured. Interest on loans determined to be troubled debt restructurings is recognized on an accrual basis in accordance with the restructured terms if the loan is in compliance with the modified terms. Nonaccrual loans are returned to accrual status when, in the opinion of management, the financial position of the borrower indicates there is no longer any reasonable doubt as to the timely collection of interest or principal. The Company requires a period of satisfactory performance of not less than six months before returning a nonaccrual loan to accrual status. The following tables present average recorded investment and interest income recognized on impaired loans for the years ended December 31, 2018, 2017 and 2016 (in thousands): 2018 2017 2016 Average Investment in Impaired Loans Interest Income Recognized Average Investment in Impaired Loans Interest Income Recognized Average Investment in Impaired Loans Interest Income Recognized Construction and land development $ 2,558 $ 37 $ — $ — $ 229 $ — Farm loans 415 — 293 — 207 — 1-4 Family residential properties 6,297 144 3,267 29 2,988 22 Multifamily residential properties 9,666 137 377 1 3,824 55 Commercial real estate 9,818 271 5,457 13 6,675 36 Loans secured by real estate 28,754 589 9,394 43 13,923 113 Agricultural loans 727 23 878 — 1,394 — Commercial and industrial loans 9,003 6 6,586 8 1,485 4 Consumer loans 131 1 325 — 557 2 All other loans 3 — — — — — Total loans $ 38,618 $ 619 $ 17,183 $ 51 $ 17,359 $ 119 The amount of interest income recognized by the Company within the periods stated above was due to loans modified in a troubled debt restructuring that remained on accrual status. The balance of loans modified in a troubled debt restructuring included in the impaired loans stated above that were still accruing was $7,237,000 of multifamily residential properties, $1,945,000 of construction & land development, $1,769,000 of 1-4 Family residential properties, $676,000 of commercial real estate, and $962,000 of commercial and industrial loans at December 31, 2018 and $578,000 of 1-4 Family residential properties, $251,000 of commercial real estate loans, and $25,000 of commercial and industrial loans at December 31, 2017 . For the years ended December 31, 2018, 2017 and 2016 , the amount of interest income recognized using a cash-basis method of accounting during the period that the loans were impaired was not material. Non Accrual Loans The following table presents the Co" id="sjs-B4">Loans are stated at the principal amount outstanding net of unearned discounts, unearned income and allowance for loan losses. Unearned income includes deferred loan origination fees reduced by loan origination costs and is amortized to interest income over the life of the related loan using methods that approximated the effective interest rate method. Interest on substantially all loans is credited to income based on the principal amount outstanding. A summary of loans at December 31, 2018 and 2017 follows (in thousands): 2018 2017 Construction and land development $ 51,013 $ 107,721 Farm loans 232,409 127,232 1-4 Family residential properties 374,751 294,483 Multifamily residential properties 186,393 61,966 Commercial real estate 911,656 684,639 Loans secured by real estate 1,756,222 1,276,041 Agricultural loans 136,125 86,602 Commercial and industrial loans 559,120 445,378 Consumer loans 92,744 30,070 All other loans 113,925 108,023 Gross loans 2,658,136 1,946,114 Less: Loans held for sale 1,508 1,025 2,656,628 1,945,089 Less: Net deferred loan fees, premiums and discounts 13,617 6,613 Allowance for loan losses 26,189 19,977 Net loans $ 2,616,822 $ 1,918,499 Net loans increased $698.3 million as of December 31, 2018 compared to December 31, 2017. Loans expected to be sold are classified as held for sale in the consolidated financial statements and are recorded at the lower of aggregate cost or market value, taking into consideration future commitments to sell the loans. These loans are primarily for 1-4 family residential properties. The balance of loans held for sale, excluded from the balances above, were $1,508,000 and $1,025,000 at December 31, 2018 and 2017 , respectively. Most of the Company’s business activities are with customers located within central Illinois. At December 31, 2018 , the Company’s loan portfolio included $368.5 million of loans to borrowers whose businesses are directly related to agriculture. Of this amount, $276.1 million was concentrated in other grain farming. Total loans to borrowers whose businesses are directly related to agriculture increased $154.7 million from $213.8 million at December 31, 2017 while loans concentrated in other grain farming increased $105.3 million from $170.8 million at December 31, 2017 . While the Company adheres to sound underwriting practices, including collateralization of loans, any extended period of low commodity prices, drought conditions, significantly reduced yields on crops and/or reduced levels of government assistance to the agricultural industry could result in an increase in the level of problem agriculture loans and potentially result in loan losses within the agricultural portfolio. In addition, at December 31, 2018 the Company had $129.2 million of loans to motels and hotels compared to $131.7 million at December 31, 2017 . The performance of these loans is dependent on borrower specific issues as well as the general level of business and personal travel within the region. While the Company adheres to sound underwriting standards, a prolonged period of reduced business or personal travel could result in an increase in nonperforming loans to this business segment and potentially in loan losses. The Company also had $250.5 million and $186.0 million of loans to lessors of non-residential buildings at December 31, 2018 and 2017 , respectively, $289.2 million and $131.8 million of loans to lessors of residential buildings and dwellings at December 31, 2018 and 2017 , respectively, and $105.3 million and $95.7 million of loans to other gambling industries at December 31, 2018 and 2017 . The structure of the Company’s loan approval process is based on progressively larger lending authorities granted to individual loan officers, loan committees, and ultimately the board of directors. Outstanding balances to one borrower or affiliated borrowers are limited by federal regulation; however, limits well below the regulatory thresholds are generally observed. The vast majority of the Company’s loans are to businesses located in the geographic market areas served by the Company’s branch bank system. Additionally, a significant portion of the collateral securing the loans in the portfolio is located within the Company’s primary geographic footprint. In general, the Company adheres to loan underwriting standards consistent with industry guidelines for all loan segments. The Company’s lending can be summarized into the following primary areas: Commercial Real Estate Loans. Commercial real estate loans are generally comprised of loans to small business entities to purchase or expand structures in which the business operations are housed, loans to owners of real estate who lease space to non-related commercial entities, loans for construction and land development, loans to hotel operators, and loans to owners of multi-family residential structures, such as apartment buildings. Commercial real estate loans are underwritten based on historical and projected cash flows of the borrower and secondarily on the underlying real estate pledged as collateral on the debt. For the various types of commercial real estate loans, minimum criteria have been established within the Company’s loan policy regarding debt service coverage while maximum limits on loan-to-value and amortization periods have been defined. Maximum loan-to-value ratios range from 65% to 80% depending upon the type of real estate collateral, while the desired minimum debt coverage ratio is 1.20x . Amortization periods for commercial real estate loans are generally limited to twenty years . The Company’s commercial real estate portfolio is well below the thresholds that would designate a concentration in commercial real estate lending, as established by the federal banking regulators. Commercial and Industrial Loans. Commercial and industrial loans are primarily comprised of working capital loans used to purchase inventory and fund accounts receivable that are secured by business assets other than real estate. These loans are generally written for one year or less. Also, equipment financing is provided to businesses with these loans generally limited to 80% of the value of the collateral and amortization periods limited to seven years . Commercial loans are often accompanied by a personal guaranty of the principal owners of a business. Like commercial real estate loans, the underlying cash flow of the business is the primary consideration in the underwriting process. The financial condition of commercial borrowers is monitored at least annually with the type of financial information required determined by the size of the relationship. Measures employed by the Company for businesses with higher risk profiles include the use of government-assisted lending programs through the Small Business Administration and U.S. Department of Agriculture. Agricultural and Agricultural Real Estate Loans. Agricultural loans are generally comprised of seasonal operating lines to cash grain farmers to plant and harvest corn and soybeans and term loans to fund the purchase of equipment. Agricultural real estate loans are primarily comprised of loans for the purchase of farmland. Specific underwriting standards have been established for agricultural-related loans including the establishment of projections for each operating year based on industry developed estimates of farm input costs and expected commodity yields and prices. Operating lines are typically written for one year and secured by the crop. Loan-to-value ratios on loans secured by farmland generally do not exceed 65% and have amortization periods limited to twenty five years . Federal government-assistance lending programs through the Farm Service Agency are used to mitigate the level of credit risk when deemed appropriate. Residential Real Estate Loans. Residential real estate loans generally include loans for the purchase or refinance of residential real estate properties consisting of one-to-four units and home equity loans and lines of credit. The Company sells the vast majority of its long-term fixed rate residential real estate loans to secondary market investors. The Company also releases the servicing of these loans upon sale. The Company retains all residential real estate loans with balloon payment features. Balloon periods are limited to five years . Residential real estate loans are typically underwritten to conform to industry standards including criteria for maximum debt-to-income and loan-to-value ratios as well as minimum credit scores. Loans secured by first liens on residential real estate held in the portfolio typically do not exceed 80% of the value of the collateral and have amortization periods of twenty five years or less. The Company does not originate subprime mortgage loans. Consumer Loans. Consumer loans are primarily comprised of loans to individuals for personal and household purposes such as the purchase of an automobile or other living expenses. Minimum underwriting criteria have been established that consider credit score, debt-to-income ratio, employment history, and collateral coverage. Typically, consumer loans are set up on monthly payments with amortization periods based on the type and age of the collateral. Other Loans. Other loans consist primarily of loans to municipalities to support community projects such as infrastructure improvements or equipment purchases. Underwriting guidelines for these loans are consistent with those established for commercial loans with the additional repayment source of the taxing authority of the municipality. Purchase Credit-Impaired Loans. Loans acquired with evidence of credit deterioration since origination and for which it is probable that all contractually required payments will not be collected are considered to be credit impaired. Evidence of credit quality deterioration as of the purchase date may include information such as past-due and nonaccrual status, borrower credit scores and recent loan to value percentages. Purchase credit-impaired ("PCI") loans are accounted for under ASC 310-30, Receivables--Loans and Debt Securities Acquired with Deteriorated Credit Quality ("ASC 310-30"), and are initially measured at fair value, which includes the estimated future credit losses expected to be incurred over the life of the loan. Accordingly, an allowance for credit losses related to these loans is not carried over and recorded at the acquisition date. The cash flows expected to be collected were estimated using current key assumptions, such as default rates, value of underlying collateral, severity and prepayment speeds. Allowance for Loan Losses The allowance for loan losses represents the Company’s best estimate of the reserve necessary to adequately account for probable losses existing in the current portfolio. The provision for loan losses is the charge against current earnings that is determined by the Company as the amount needed to maintain an adequate allowance for loan losses. In determining the adequacy of the allowance for loan losses, and therefore the provision to be charged to current earnings, the Company relies predominantly on a disciplined credit review and approval process that extends to the full range of the Company’s credit exposure. The review process is directed by the overall lending policy and is intended to identify, at the earliest possible stage, borrowers who might be facing financial difficulty. Factors considered by the Company in evaluating the overall adequacy of the allowance include historical net loan losses, the level and composition of nonaccrual, past due and troubled debt restructurings, trends in volumes and terms of loans, effects of changes in risk selection and underwriting standards or lending practices, lending staff changes, concentrations of credit, industry conditions and the current economic conditions in the region where the Company operates. The Company estimates the appropriate level of allowance for loan losses by separately evaluating large impaired loans and nonimpaired loans. The Company has loans acquired from business combinations with uncollected principal balances. These loans are carried net of a fair value adjustment for credit risk and interest rates and are only included in the allowance calculation to the extent that the reserve requirement exceeds the fair value adjustment. However, as the acquired loans renew, it is necessary to establish an allowance which represents an amount that, in management’s opinion, will be adequate to absorb probable credit losses inherent in such loans. Impaired loans. The Company individually evaluates certain loans for impairment. In general, these loans have been internally identified via the Company’s loan grading system as credits requiring management’s attention due to underlying problems in the borrower’s business or collateral concerns. This evaluation considers expected future cash flows, the value of collateral and also other factors that may impact the borrower’s ability to make payments when due. For loans greater than $250,000 impairment is individually measured each quarter using one of three alternatives: (1) the present value of expected future cash flows discounted at the loan’s effective interest rate; (2) the loan’s observable market price, if available; or (3) the fair value of the collateral less costs to sell for collateral dependent loans and loans for which foreclosure is deemed to be probable. A specific allowance is assigned when expected cash flows or collateral do not justify the carrying amount of the loan. The carrying value of the loan reflects reductions from prior charge-offs. Non-Impaired loans. Non-impaired loans comprise the vast majority of the Company’s total loan portfolio and include loans in accrual status and those credits not identified as troubled debt restructurings. A small portion of these loans are considered “criticized” due to the risk rating assigned reflecting elevated credit risk due to characteristics, such as a strained cash flow position, associated with the individual borrowers. Criticized loans are those assigned risk ratings of Watch, Substandard, or Doubtful. Determining the appropriate level of the allowance for loan losses for all non-impaired loans is based on a migration analysis of net losses over a rolling twelve quarter period by loan segment. A weighted average of the net losses is determined by assigning more weight to the most recent quarters in order to recognize current risk factors influencing the various segments of the loan portfolio more prominently than past periods. Environmental factors including changes in economic conditions, changes in credit policies or underwriting standards, and changes in the level of credit risk associated with specific industries and markets are evaluated each quarter to determine if adjustments to the weighted average historical net losses is appropriate given these current influences on the risk profile of each loan segment. Because the economic and business climate in any given industry or market, and its impact on any given borrower, can change rapidly, the risk profile of the loan portfolio is periodically assessed and adjusted when appropriate. Consumer loans are evaluated for adverse classification based primarily on the Uniform Retail Credit Classification and Account Management Policy established by the federal banking regulators. Classification standards are generally based on delinquency status, collateral coverage, bankruptcy and the presence of fraud. Due to weakened economic conditions during recent years, the Company established qualitative factor adjustments for each of the loan segments at levels above the historical net loss averages. Some of the economic factors included the potential for reduced cash flow for commercial operating loans from reduction in sales or increased operating costs, decreased occupancy rates for commercial buildings, reduced levels of home sales for commercial land developments, the uncertainty regarding grain prices and increased operating costs for farmers, and increased levels of unemployment and bankruptcy impacting consumer’s ability to pay. Each of these economic uncertainties was taken into consideration in developing the level of the allowance for loan losses. The Company has not materially changed any aspect of its overall approach in the determination of the allowance for loan losses. However, on an on-going basis the Company continues to refine the methods used in determining management’s best estimate of the allowance for loan losses. The following tables present the balance in the allowance for loan losses and the recorded investment in loans based on portfolio segment and impairment method as of December 31, 2018, 2017 and 2016 (in thousands): Commercial/ Commercial Real Estate Agricultural/ Agricultural Real Estate Residential Real Estate Consumer Unallocated Total December 31, 2018 Allowance for loan losses: Balance, beginning of year $ 16,546 $ 1,742 $ 886 $ 803 $ — $ 19,977 Provision charged to expense 6,070 548 1,447 602 — 8,667 Losses charged off (1,227 ) (93 ) (886 ) (787 ) — (2,993 ) Recoveries 167 — 57 314 — 538 Balance, end of period $ 21,556 $ 2,197 $ 1,504 $ 932 $ — $ 26,189 Ending balance: Individually evaluated for impairment $ 1,816 $ — $ 225 $ 3 $ — $ 2,044 Collectively evaluated for impairment $ 18,514 $ 2,197 $ 1,270 $ 929 $ — $ 22,910 Loans acquired with deteriorated credit quality $ 1,226 $ — $ 9 $ — $ — $ 1,235 Loans: Ending balance $ 1,784,741 $ 367,211 $ 392,526 $ 100,041 $ — $ 2,644,519 Ending Balance: Individually evaluated for impairment $ 14,422 $ 32 $ 2,360 $ 166 $ — $ 16,980 Collectively evaluated for impairment $ 1,756,908 $ 367,175 $ 387,961 $ 99,872 $ — $ 2,611,916 Loans acquired with deteriorated credit quality $ 13,411 $ 4 $ 2,205 $ 3 $ — $ 15,623 Commercial/ Commercial Real Estate Agricultural/ Agricultural Real Estate Residential Real Estate Consumer Unallocated Total December 31, 2017 Allowance for loan losses: Balance, beginning of year $ 12,901 $ 2,249 $ 874 $ 693 $ 36 $ 16,753 Provision charged to expense 6,884 153 100 361 (36 ) 7,462 Losses charged off (3,795 ) (662 ) (217 ) (521 ) — (5,195 ) Recoveries 556 2 129 270 — 957 Balance, end of period $ 16,546 $ 1,742 $ 886 $ 803 $ — $ 19,977 Ending balance: Individually evaluated for impairment $ 586 $ 2 $ 25 $ 1 $ — $ 614 Collectively evaluated for impairment $ 15,951 $ 1,740 $ 861 $ 802 $ — $ 19,354 Loans acquired with deteriorated credit quality 9 0 0 0 0 9 Loans: Ending balance $ 1,371,787 $ 213,521 $ 315,123 $ 39,070 $ — $ 1,939,501 Ending balance: Individually evaluated for impairment $ 11,372 $ 488 $ 1,026 $ 200 $ — $ 13,086 Collectively evaluated for impairment $ 1,360,156 $ 213,033 $ 314,097 $ 38,870 $ — $ 1,926,156 Loans acquired with deteriorated credit quality $ 259 $ — $ — $ — $ — $ 259 December 31, 2016 Allowance for loan losses: Balance, beginning of year $ 11,379 $ 1,337 $ 994 $ 642 $ 224 $ 14,576 Provision charged to expense 1,467 933 113 501 (188 ) 2,826 Losses charged off (747 ) (30 ) (234 ) (664 ) — (1,675 ) Recoveries 802 9 1 214 — 1,026 Balance, end of year $ 12,901 $ 2,249 $ 874 $ 693 $ 36 $ 16,753 Ending balance: Individually evaluated for impairment $ 192 $ 660 $ 6 $ — $ — $ 858 Collectively evaluated for impairment $ 12,695 $ 1,589 $ 868 $ 693 $ 36 $ 15,881 Loans acquired with deteriorated credit quality 14 0 0 0 0 14 Loans: Ending balance $ 1,204,799 $ 212,513 $ 366,823 $ 41,857 $ — $ 1,825,992 Ending balance: Individually evaluated for impairment $ 1,956 $ 1,345 $ 1,752 $ 213 $ — $ 5,266 Collectively evaluated for impairment $ 1,199,003 $ 211,168 $ 360,825 $ 41,644 $ — $ 1,812,640 Loans acquired with deteriorated credit quality $ 3,840 $ — $ 4,246 $ — $ — $ 8,086 Consistent with regulatory guidance, charge-offs on all loan segments are taken when specific loans, or portions thereof, are considered uncollectible. The Company’s policy is to promptly charge these loans off in the period the uncollectible loss is reasonably determined. For all loan portfolio segments except 1-4 family residential properties and consumer, the Company promptly charges-off loans, or portions thereof, when available information confirms that specific loans are uncollectible based on information that includes, but is not limited to, (1) the deteriorating financial condition of the borrower, (2) declining collateral values, and/or (3) legal action, including bankruptcy, that impairs the borrower’s ability to adequately meet its obligations. For impaired loans that are considered to be solely collateral dependent, a partial charge-off is recorded when a loss has been confirmed by an updated appraisal or other appropriate valuation of the collateral. The Company charges-off 1-4 family residential and consumer loans, or portions thereof, when the Company reasonably determines the amount of the loss. The Company adheres to timeframes established by applicable regulatory guidance which provides for the charge-down of 1-4 family first and junior lien mortgages to the net realizable value less costs to sell when the loan is 180 days past due, charge-off of unsecured open-end loans when the loan is 180 days past due, and charge down to the net realizable value when other secured loans are 120 days past due. Loans at these respective delinquency thresholds for which the Company can clearly document that the loan is both well-secured and in the process of collection, such that collection will occur regardless of delinquency status, need not be charged off. Credit Quality The Company categorizes loans into risk categories based on relevant information about the ability of borrowers to service their debt such as: current financial information, historical payment experience, collateral support, credit documentation, public information, and current economic trends, among other factors. The Company analyzes loans individually by classifying the loans as to credit risk. This analysis is performed on a continuous basis. The Company uses the following definitions for risk ratings, which are commensurate with a loan considered "criticized": Special Mention. Loans classified as special mention have a potential weakness that deserves management’s close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the loan or of the institution’s credit position at some future date. Substandard. Loans classified as substandard are inadequately protected by the current sound-worthiness and paying capacity of the obligor or of the collateral pledged, if any. Loans so classified have a well-defined weakness or weaknesses that jeopardize the liquidation of the debt. They are characterized by the distinct possibility that the institution will sustain some loss if the deficiencies are not corrected. Doubtful. Loans classified as doubtful have all the weaknesses inherent in those classified as substandard, with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of currently existing factors, conditions and values, highly questionable and improbable. Loans not meeting the criteria above that are analyzed individually as part of the above described process are considered pass rated loans. The following tables present the credit risk profile of the Company’s loan portfolio based on rating category and payment activity as of December 31, 2018 and 2017 (in thousands): Construction & Land Development Farm Loans 1-4 Family Residential Properties Multifamily Residential Properties 2018 2017 2018 2017 2018 2017 2018 2017 Pass $ 49,794 $ 107,140 $ 221,047 $ 120,767 $ 352,583 $ 282,441 $ 163,845 $ 60,954 Special Mention 471 454 7,805 4,829 5,526 2,654 8,144 476 Substandard 354 — 2,848 1,587 15,409 8,572 12,062 368 Doubtful — — — — — — — — Total $ 50,619 $ 107,594 $ 231,700 $ 127,183 $ 373,518 $ 293,667 $ 184,051 $ 61,798 Commercial Real Estate (Nonfarm/Nonresidential) Agricultural Loans Commercial & Industrial Loans Consumer Loans 2018 2017 2018 2017 2018 2017 2018 2017 Pass $ 861,086 $ 647,208 $ 127,863 $ 83,469 $ 535,186 $ 425,846 $ 90,133 $ 29,375 Special Mention 16,035 16,941 7,581 2,304 9,967 11,492 177 5 Substandard 29,729 17,608 433 858 11,858 6,925 1,206 369 Doubtful — — — — — — — — Total $ 906,850 $ 681,757 $ 135,877 $ 86,631 $ 557,011 $ 444,263 $ 91,516 $ 29,749 All Other Loans Total Loans 2018 2017 2018 2017 Pass $ 110,352 $ 103,339 $ 2,511,889 $ 1,860,539 Special Mention 3,010 3,520 58,716 42,675 Substandard 15 — 73,914 36,287 Doubtful — — — — Total $ 113,377 $ 106,859 $ 2,644,519 $ 1,939,501 The following table presents the Company’s loan portfolio aging analysis at December 31, 2018 and 2017 (in thousands): 30-59 days Past Due 60-89 days Past Due 90 Days or More Past Due Total Past Due Current Total Loans Receivable Total Loans > 90 days & Accruing December 31, 2018 Construction and land development $ 460 $ 43 $ — $ 503 $ 50,116 $ 50,619 $ — Farm loans — 804 — 804 230,896 231,700 — 1-4 Family residential properties 3,347 3,051 4,080 10,478 363,040 373,518 — Multifamily residential properties 1,149 — 1,955 3,104 180,947 184,051 — Commercial real estate 1,349 89 4,058 5,496 901,354 906,850 — Loans secured by real estate 6,305 3,987 10,093 20,385 1,726,353 1,746,738 — Agricultural loans 63 — 20 83 135,794 135,877 — Commercial and industrial loans 1,417 10 3,902 5,329 551,682 557,011 — Consumer loans 888 356 299 1,543 89,973 91,516 — All other loans 697 — — 697 112,680 113,377 — Total loans $ 9,370 $ 4,353 $ 14,314 $ 28,037 $ 2,616,482 $ 2,644,519 $ — December 31, 2017 Construction and land development $ 26 $ 48 $ — $ 74 $ 107,520 $ 107,594 $ — Farm loans — — 396 396 126,787 127,183 — 1-4 Family residential properties 3,023 538 1,767 5,328 288,339 293,667 — Multifamily residential properties — — — — 61,798 61,798 — Commercial real estate 90 38 3,566 3,694 678,063 681,757 — Loans secured by real estate 3,139 624 5,729 9,492 1,262,507 1,271,999 — Agricultural loans — 32 158 190 86,441 86,631 — Commercial and industrial loans 192 3 770 965 443,298 444,263 — Consumer loans 178 67 27 272 29,477 29,749 — All other loans — — — — 106,859 106,859 — Total loans $ 3,509 $ 726 $ 6,684 $ 10,919 $ 1,928,582 $ 1,939,501 $ — Impaired Loans Within all loan portfolio segments, loans are considered impaired when, based on current information and events, it is probable the Company will be unable to collect all amounts due from the borrower in accordance with the contractual terms of the loan. The entire balance of a loan is considered delinquent if the minimum payment contractually required to be made is not received by the specified due date. Impaired loans, excluding certain troubled debt restructured loans, are placed on nonaccrual status. Impaired loans include nonaccrual loans and loans modified in troubled debt restructurings where concessions have been granted to borrowers experiencing financial difficulties. These concessions could include a reduction in the interest rate on the loan, payment extensions, forgiveness of principal, forbearance or other actions intended to maximize collection. It is the Company’s policy to have any restructured loans which are on nonaccrual status prior to being modified remain on nonaccrual status until, in the opinion of management, the financial position of the borrower indicates there is no longer any reasonable doubt as to the timely collection of interest or principal. If the restructured loan is on accrual status prior to being modified, the loan is reviewed to determine if the modified loan should remain on accrual status. The following tables present impaired loans as of December 31, 2018 and 2017 (in thousands): 2018 2017 Recorded Balance Unpaid Principal Balance Specific Allowance Recorded Balance Unpaid Principal Balance Specific Allowance Loans with a specific allowance: Construction and land development $ 2,559 $ 2,559 $ 14 $ — $ — $ — Farm loans — — — 276 276 — 1-4 Family residential properties 4,565 4,952 234 1,026 1,347 25 Multifamily residential properties 4,465 4,465 — 313 313 — Commercial real estate 12,517 12,804 1,553 5,544 5,565 531 Loans secured by real estate 24,106 24,780 1,801 7,159 7,501 556 Agricultural loans 36 504 — 212 1,009 2 Commercial and industrial loans 8,292 8,723 1,475 5,774 6,037 64 Consumer loans 169 171 3 200 200 1 All other loans — — — — — — Total loans $ 32,603 $ 34,178 $ 3,279 $ 13,345 $ 14,747 $ 623 Loans without a specific allowance: Construction and land development $ 48 $ 48 $ — $ — $ — $ — Farm loans 309 309 — 15 15 — 1-4 Family residential properties 3,680 4,769 — 2,239 2,664 — Multifamily residential properties 7,597 7,597 — 55 55 — Commercial real estate 983 1,201 — 303 368 — Loans secured by real estate 12,617 13,924 — 2,612 3,102 — Agricultural loans 631 163 — 545 — — Commercial and industrial loans 1,660 2,027 — 909 1,249 — Consumer loans 471 1,006 — 102 119 — All other loans 6 6 — — — — Total loans $ 15,385 $ 17,126 $ — $ 4,168 $ 4,470 $ — Total loans: Construction and land development $ 2,607 $ 2,607 $ 14 $ — $ — $ — Farm loans 309 309 — 291 291 — 1-4 Family residential properties 8,245 9,721 234 3,265 4,011 25 Multifamily residential properties 12,062 12,062 — 368 368 — Commercial real estate 13,500 14,005 1,553 5,847 5,933 531 Loans secured by real estate 36,723 38,704 1,801 9,771 10,603 556 Agricultural loans 667 667 — 757 1,009 2 Commercial and industrial loans 9,952 10,750 1,475 6,683 7,286 64 Consumer loans 640 1,177 3 302 319 1 All other loans 6 6 — — — — Total loans $ 47,988 $ 51,304 $ 3,279 $ 17,513 $ 19,217 $ 623 The Company’s policy is to discontinue the accrual of interest income on all loans for which principal or interest is ninety days past due. The accrual of interest is discontinued earlier when, in the opinion of management, there is reasonable doubt as to the timely collection of interest or principal. Once interest accruals are discontinued, accrued but uncollected interest is charged against current year income. Subsequent receipts on non-accrual loans are recorded as a reduction of principal, and interest income is recorded only after principal recovery is reasonably assured. Interest on loans determined to be troubled debt restructurings is recognized on an accrual basis in accordance with the restructured terms if the loan is in compliance with the modified terms. Nonaccrual loans are returned to accrual status when, in the opinion of management, the financial position of the borrower indicates there is no longer any reasonable doubt as to the timely collection of interest or principal. The Company requires a period of satisfactory performance of not less than six months before returning a nonaccrual loan to accrual status. The following tables present average recorded investment and interest income recognized on impaired loans for the years ended December 31, 2018, 2017 and 2016 (in thousands): 2018 2017 2016 Average Investment in Impaired Loans Interest Income Recognized Average Investment in Impaired Loans Interest Income Recognized Average Investment in Impaired Loans Interest Income Recognized Construction and land development $ 2,558 $ 37 $ — $ — $ 229 $ — Farm loans 415 — 293 — 207 — 1-4 Family residential properties 6,297 144 3,267 29 2,988 22 Multifamily residential properties 9,666 137 377 1 3,824 55 Commercial real estate 9,818 271 5,457 13 6,675 36 Loans secured by real estate 28,754 589 9,394 43 13,923 113 Agricultural loans 727 23 878 — 1,394 — Commercial and industrial loans 9,003 6 6,586 8 1,485 4 Consumer loans 131 1 325 — 557 2 All other loans 3 — — — — — Total loans $ 38,618 $ 619 $ 17,183 $ 51 $ 17,359 $ 119 The amount of interest income recognized by the Company within the periods stated above was due to loans modified in a troubled debt restructuring that remained on accrual status. The balance of loans modified in a troubled debt restructuring included in the impaired loans stated above that were still accruing was $7,237,000 of multifamily residential properties, $1,945,000 of construction & land development, $1,769,000 of 1-4 Family residential properties, $676,000 of commercial real estate, and $962,000 of commercial and industrial loans at December 31, 2018 and $578,000 of 1-4 Family residential properties, $251,000 of commercial real estate loans, and $25,000 of commercial and industrial loans at December 31, 2017 . For the years ended December 31, 2018, 2017 and 2016 , the amount of interest income recognized using a cash-basis method of accounting during the period that the loans were impaired was not material. Non Accrual Loans The following table presents the Co

Premises and Equipment, Net (No

Premises and Equipment, Net (Notes)	12 Months Ended
	Dec. 31, 2018
Property, Plant and Equipment [Abstract]
Premises and Equipment, Net	Premises and Equipment, Net Premises and equipment at December 31, 2018 and 2017 consisted of (in thousands): 2018 2017 Land $ 14,734 $ 9,933 Buildings and improvements 52,129 37,229 Furniture and equipment 19,718 16,145 Leasehold improvements 3,580 4,109 Construction in progress 321 29 Subtotal 90,482 67,445 Accumulated depreciation and amortization 31,365 29,179 Total $ 59,117 $ 38,266 Depreciation and amortization expense was $3.0 million , $2.7 million and $2.5 million for the years ended December 31, 2018 , 2017 and 2016 , respectively.

Goodwill and Intangible Assets

Goodwill and Intangible Assets	12 Months Ended
	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	Goodwill and Intangible Assets The Company has goodwill from business combinations, intangible assets from branch acquisitions, identifiable intangible assets assigned to core deposit relationships and customer lists of business lines acquired. The following table presents gross carrying amount and accumulated amortization by major intangible asset class as of December 31, 2018 and 2017 (in thousands): 2018 2017 Gross Carrying Value Accumulated Amortization Gross Carrying Value Accumulated Amortization Goodwill not subject to amortization $ 109,037 $ 3,760 $ 63,910 $ 3,760 Intangibles from branch acquisition 3,015 3,015 3,015 3,015 Core deposit intangibles 32,355 14,017 19,862 11,473 Customer list intangibles 16,029 2,648 3,731 2,285 $ 160,436 $ 23,440 $ 90,518 $ 20,533 Goodwill of $27.4 million was provisionally recorded for the acquisition and merger of First Bank during the second quarter of 2018. Goodwill was adjusted to $26.5 million within the twelve month measurement period t o reflect proper valuation of financial assets and liabilities. All of the goodwill was assigned to the banking segment of the Company. The Company expects this goodwill will not be deductible for tax purposes. The following table provides a reconciliation of the purchase price paid for First Bank and the amount of goodwill recorded (in thousands): Unallocated purchase price $ 26,946 Less purchase accounting adjustments: Fair value of securities 320 Fair value of loans 3,463 Fair value of OREO 12 Fair value of mortgage servicing rights (1,097 ) Fair value of premises and equipment 689 Fair value of time deposits 1,301 Fair value of FHLB advances (328 ) Fair value of subordinated debentures (1,451 ) Core deposit intangible (5,224 ) Other assets and other liabilities 1,860 (455 ) Resulting goodwill from acquisition $ 26,491 Goodwill of $18.6 million was recorded for the acquisition and merger of Soy Capital during the fourth quarter of 2018. All of the goodwill was assigned to the banking segment of the Company. The Company expects this goodwill will not be deductible for tax purposes. The following table provides a reconciliation of the purchase price paid for the acquisition of Soy Capital and the amount of goodwill recorded (in thousands): Unallocated purchase price $ 22,104 Less purchase accounting adjustments: Fair value of securities 41 Fair value of loans 3,377 Fair value of OREO 345 Fair value of premises and equipment (1,228 ) Fair value of time deposits (343 ) Fair value of FHLB advances (29 ) Core deposit intangible (7,269 ) Customer list intangibles (12,298 ) Other assets and other liabilities 13,936 $ (3,468 ) Resulting goodwill from acquisition $ 18,636 As part of the acquisition of First Bank acquisition, the Company acquired mortgage servicing rights valued at $1,558,000 . The following table summarizes the activity pertaining to the mortgage servicing rights included in intangible assets as of December 31, 2018 and 2017 (in thousands): December 31, 2018 December 31, 2017 Beginning Balance 844 985 Acquired Balance 1,558 — Mortgage Servicing rights capitalized 7 — Mortgage Servicing rights amortized (308 ) (141 ) Ending Balance $ 2,101 $ 844 Total amortization expense for the years ended December 31, 2018, 2017 and 2016 was as follows (in thousands): 2018 2017 2016 Core deposit intangibles 2,544 1,829 1,628 Customer list intangibles 363 183 183 Mortgage Servicing Rights 308 141 98 $ 3,215 $ 2,153 $ 1,909 Estimated amortization expense for each of the five succeeding years is shown in the table below (in thousands): For year ended 12/31/19 $ 5,355 For year ended 12/31/20 4,644 For year ended 12/31/21 3,996 For year ended 12/31/22 3,630 For year ended 12/31/23 3,318 In accordance with the provisions of SFAS 142,”Goodwill and Other Intangible Assets,” codified in ASC 350, the Company performed testing of goodwill for impairment as of September 30, 2018 and 2017 , and determined, as of each of these dates, that goodwill was not impaired. Management also concluded that the remaining amounts and amortization periods were appropriate for all intangible assets.

Deposits (Notes)

Deposits (Notes)	12 Months Ended
	Dec. 31, 2018
Deposits [Abstract]
Deposit Liabilities Disclosures [Text Block]	Deposits As of December 31, 2018 and 2017 , deposits consisted of the following (in thousands): 2018 2017 Demand deposits: Non-interest bearing $ 575,784 $ 480,283 Interest-bearing 903,426 700,376 Savings 432,319 359,065 Money market 485,388 390,880 Time deposits 591,769 344,035 Total deposits $ 2,988,686 $ 2,274,639 Total interest expense on deposits for the years ended December 31, 2018, 2017 and 2016 was as follows (in thousands): 2018 2017 2016 Interest-bearing demand $ 1,158 $ 588 $ 274 Savings 579 486 445 Money market 2,135 1,224 719 Time deposits 4,699 1,697 1,275 Total $ 8,571 $ 3,995 $ 2,713 As of December 31, 2018, 2017 and 2016 , the aggregate amount of time deposits in denominations of more than $250,000 was as follows (in thousands): 2018 2017 2016 Time deposit balances in denominations of more than $250,000 $ 87,517 $ 52,598 $ 55,768 The following table shows the amount of maturities for all time deposits as of December 31, 2018 (in thousands): Less than 1 year $ 318,879 1 year to 2 years 185,814 2 years to 3 years 48,953 3 years to 4 years 21,714 4 years to 5 years 14,976 Over 5 years 1,433 Total $ 591,769 In 2018 the Company maintained account relationships with various public entities throughout its market areas. These public entities had total balances of approximately $94.8 million and $100.8 million in various checking accounts and time deposits as of December 31, 2018 and 2017 , respectively. These balances are subject to change depending upon the cash flow needs of the public entity.

Borrowings

Borrowings	12 Months Ended
	Dec. 31, 2018
Debt Disclosure [Abstract]
Borrowings	Aggregate annual maturities of FHLB advances and subordinated debentures (excluding unamortized discounts and premiums) at December 31, 2018 are (in thousands): FHLB Subordinated Debentures 2019 $ 56,000 $ — 2020 39,000 — 2021 15,000 — 2022 5,000 — 2023 5,000 — Thereafter — 30,930 $ 120,000 $ 30,930 Unamortized premium (discount) $ (255 ) $ (1,930 ) $ 119,745 $ 29,000 FHLB advances represent borrowings by First Mid Bank to fund loan demand. At December 31, 2018 the advances totaling $120 million w ere as follows: • $4 million advance with a 3-year maturity, at 1.72% due April 12, 2019 • $15 million advance with a 6-month maturity, at 2.68% due May 13, 2019 • $5 million advance with a 2-year maturity, at 1.56% , due June 28, 2019 • $10 million advance with a 11-month maturity at 2.81% , due August 30, 2019 • $5 million advance with a 15-month maturity, at 2.63% , due September 27, 2019 • $2 million advance with a 5-year maturity, at 1.89% , due October 17, 2019 • $10 million advance with a 14-month maturity at 2.88% , due November 29, 2019 • $5 million advance with a 1.5-year maturity, at 2.67% , due December 27, 2019 • $4 million advance with a 3-year maturity, at 2.40% , due January 9, 2020 • $5 million advance with a 2.5-year maturity, at 1.67% , due January 31, 2020 • $5 million advance with a 4-year maturity, at 1.79% , due April 13, 2020 • $10 million advance with a 1.5 year maturity at 2.95% , due May 29, 2020 • $5 million advance with a 2-year maturity, at 2.75% , due June 26, 2020 • $5 million advance with a 3-year maturity, at 1.75% , due July 31, 2020 • $5 million advance with a 6-year maturity, at 2.30% , due August 24, 2020 • $5 million advance with a 3.5-year maturity, at 1.83% , due February 1, 2021 • $5 million advance with a 5-year maturity, at 1.85% , due April 12, 2021 • $5 million advance with a 7-year maturity, at 2.55% , due October 1, 2021 • $5 million advance with a 5-year maturity, at 2.71% , due March 21, 2022 • $5 million advance with a 8-year maturity, at 2.40% , due January 9, 2023 Securities sold under agreements to repurchase were $192.3 million at December 31, 2018 , a increase of $37 million from $155.4 million at December 31, 2017 primarily due to addition of accounts acquired from Soy Capital. Securities sold under agreements to repurchase have overnight maturities and a weighted average rate of .15% . (in thousands) 2018 2017 2016 Securities sold under agreements to repurchase: Maximum outstanding at any month-end $ 192,330 $ 163,626 $ 185,763 Average amount outstanding for the year 140,622 144,674 129,734 The right of setoff for a repurchase agreement resembles a secured borrowing, whereby the collateral pledged by the Company would be used to settle the fair value of the repurchase agreement should the Company be in default (e.g., declare bankruptcy), the Company could cancel the repurchase agreement (i.e., cease payment of principal and interest), and attempt collection on the amount of collateral value in excess of the repurchase agreement fair value. The collateral is held by a third party financial institution in the counterparty's custodial account. The counterparty has the right to sell or repledge the investment securities. For government entity repurchase agreements, the collateral is held by the Company in a segregated custodial account under a tri-party agreement. The Company is required by the counterparty to maintain adequate collateral levels. In the event the collateral fair value falls below stipulated levels, the Company will pledge additional securities. The Company closely monitors collateral levels to ensure adequate levels are maintained, while mitigating the potential of over-collateralization in the event of counterparty default. Repurchase agreements by class of collateral pledged are as follows (in thousands): December 31, 2018 December 31, 2017 US Treasury securities and obligations of U.S. government corporations & agencies $ 130,893 $ 100,895 Mortgage-backed securities: GSE: residential 61,437 54,493 Total $ 192,330 $ 155,388 At December 31, 2018 , there was no outstanding loan balance on the revolving credit agreement with The Northern Trust Company. This loan was renewed on April 13, 2018 for one year as a revolving credit agreement with a maximum available balance of $10 million . The interest rate ( 4.65% and 3.67% at December 31, 2018 and 2017 , respectively) is floating at 2.25% over the federal funds rate. The loan is secured by all of the stock of First Mid Bank. Management believes that the Company and its subsidiary banks were in compliance with all the existing covenants at December 31, 2018 and 2017 . Also on September 7, 2016, the Company entered into a $15 million fixed-rate note with a maturity date of September 7, 2020. The interest rate is floating at 2.25% over the federal funds rate ( 4.65% and 3.67% at December 31, 2018 and 2017 , respectively) and interest and principal payments are due quarterly. As of December 31, 2018 , the balance due was zero. The loan is secured by all of the stock of First Mid Bank, including requirements for operating and capital ratios. Management believes the Company and its subsidiary bank were in compliance with all the existing covenants at December 31, 2018 and 2017 . On February 27, 2004, the Company completed the issuance and sale of $10 million of floating rate trust preferred securities through Trust I, a statutory business trust and wholly-owned unconsolidated subsidiary of the Company, as part of a pooled offering. The Company established Trust I for the purpose of issuing the trust preferred securities. The $10 million in proceeds from the trust preferred issuance and an additional $310,000 for the Company’s investment in common equity of the Trust, a total of $10,310,000 , was invested in junior subordinated debentures of the Company. The underlying junior subordinated debentures issued by the Company to Trust I mature in 2034, bear interest at three-month London Interbank Offered Rate (“LIBOR”) plus 280 basis points , reset quarterly, and are callable, at the option of the Company, at par on or after April 7, 2009. At December 31, 2018 and 2017 the rate was 5.19% and 4.21% , respectively. The Company used the proceeds of the offering for general corporate purposes. On April 26, 2006, the Company completed the issuance and sale of $10 million of fixed/floating rate trust preferred securities through Trust II, a statutory business trust and wholly-owned unconsolidated subsidiary of the Company, as part of a pooled offering. The Company established Trust II for the purpose of issuing the trust preferred securities. The $10 million in proceeds from the trust preferred issuance and an additional $310,000 for the Company’s investment in common equity of Trust II, a total of $10,310,000 , was invested in junior subordinated debentures of the Company. The underlying junior subordinated debentures issued by the Company to Trust II mature in 2036, bore interest at a fixed rate of 6.98% paid quarterly until June 15, 2011 and then converted to floating rate (LIBOR plus 160 basis points) after June 15, 2011 ( 4.39% and 3.19% at December 31, 2018 and 2017 ). The net proceeds to the Company were used for general corporate purposes, including the Company’s acquisition of Mansfield. On September 8, 2016, the Company assumed the trust preferred securities of Clover Leaf Statutory Trust I (“CLST I”), a statutory business trust that was a wholly owned unconsolidated subsidiary of First Clover Financial. The $4 million of trust preferred securities and an additional $124,000 additional investment in common equity of CLST I, is invested in junior subordinated debentures issued to CLST I. The subordinated debentures mature in 2025, bear interest at three-month LIBOR plus 185 basis points ( 4.64% and 3.44% at December 31, 2018 and 2017 , respectively) and resets quarterly. On May 1, 2018, the Company assumed the trust preferred securities of FBTC Statutory Trust I (“FBTCST I”), a statutory business trust that was a wholly owned unconsolidated subsidiary of First BancTrust Corporation. The $6 million of trust preferred securities and an additional $186,000 additional investment in common equity of FBTCST I is invested in junior subordinated debentures issued to FBTCST I. The subordinated debentures mature in 2035, bear interest at three-month LIBOR plus 170 basis points ( 4.49% and 3.29% at December 31, 2018 and 2017 , respectively) and resets quarterly. The trust preferred securities issued by Trust I, Trust II, CLST I, and FBTCSTI are included as Tier 1 capital of the Company for regulatory capital purposes. On March 1, 2005, the Federal Reserve Board adopted a final rule that allows the continued limited inclusion of trust preferred securities in the calculation of Tier 1 capital for regulatory purposes. The final rule provided a five-year transition period, ending September 30, 2010, for application of the revised quantitative limits. On March 17, 2009, the Federal Reserve Board adopted an additional final rule that delayed the effective date of the new limits on inclusion of trust preferred securities in the calculation of Tier 1 capital until March 31, 2012. The application of the revised quantitative limits did not and is not expected to have a significant impact on its calculation of Tier 1 capital for regulatory purposes or its classification as well-capitalized. The Dodd-Frank Act, signed into law July 21, 2010, removes trust preferred securities as a permitted component of a holding company’s Tier 1 capital after a three-year phase-in period beginning January 1, 2013 for larger holding companies. For holding companies with less than $15 billion in consolidated assets, existing issues of trust preferred securities are grandfathered and not subject to this new restriction. Similarly, the final rule implementing the Basel III reforms allows holding companies with less than $15 billion in consolidated assets as of December 31, 2009 to continue to count toward Tier 1 capital any trust preferred securities issued before May 19, 2010. New issuances of trust preferred securities, however would not count as Tier 1 regulatory capital. In addition to requirements of the Dodd-Frank Act discussed above, the act also required the federal banking agencies to adopt rules that prohibit banks and their affiliates from engaging in proprietary trading and investing in and sponsoring certain unregistered investment companies (defined as hedge funds and private equity funds). This rule is generally referred to as the “Volcker Rule.” On December 10, 2013, the federal banking agencies issued final rules to implement the prohibitions required by the Volcker Rule. Following the publication of the final rule, and in reaction to concerns in the banking industry regarding the adverse impact the final rule’s treatment of certain collateralized debt instruments has on community banks, the federal banking agencies approved an interim final rule to permit banking entities to retain interests in certain collateralized debt obligations backed primarily by trust preferred securities. Under the interim final rule, the agencies permit the retention of an interest in or sponsorship of covered funds by banking entities under $15 billion in assets if (1) the collateralized debt obligation was established and issued prior to May 19, 2010, (2) the banking entity reasonably believes that the offering proceeds received by the collateralized debt obligation were invested primarily in qualifying trust preferred collateral, and (3) the banking entity’s interests in the collateralized debt obligation was acquired on or prior to December 10, 2013. Although the Volcker Rule impacts many large banking entities, the Company does not currently anticipate that the Volcker Rule will have a material effect on the operations of the Company or First Mid Bank.

Regulatory Capital (Notes)

Regulatory Capital (Notes)	12 Months Ended
	Dec. 31, 2018
Regulatory Capital [Abstract]
Regulatory Capital Requirements under Banking Regulations [Text Block]	Regulatory Capital The Company is subject to various regulatory capital requirements administered by the federal banking agencies. Bank holding companies follow minimum regulatory requirements established by the Board of Governors of the Federal Reserve System (“Federal Reserve System”), and First Mid Bank follow similar minimum regulatory requirements established for national banks by the Office of the Comptroller of the Currency (“OCC”). Failure to meet minimum capital requirements can initiate certain mandatory and possibly additional discretionary action by regulators that, if undertaken, could have a direct material effect on the Company’s financial statements. Quantitative measures established by each regulatory capital standards to ensure capital adequacy require the Company and its subsidiary bank to maintain a minimum capital amounts and ratios (set forth in the table below). Management believes that, as of December 31, 2018 and 2017 , the Company, First Mid Bank, and Soy Capital Bank met all capital adequacy requirements. As of December 31, 2018 and 2017 , the most recent notification from the primary regulators categorized First Mid Bank and Soy Capital Bank (prior to its merger into First Mid Bank) as well capitalized under the regulatory framework for prompt corrective action. To be categorized as well capitalized, minimum total risk-based capital, Tier 1 risk-based capital, Common Equity Tier 1 risk-based capital, and Tier 1 leverage ratios must be maintained as set forth in the table below. At December 31, 2018 , there were no conditions or events since the most recent notification that management believes have changed this categorization. Actual Required Minimum For Capital Adequacy Purposes with Capital Buffer To Be Well-Capitalized Under Prompt Corrective Action Provisions Amount (in thousands) Ratio Amount (in thousands) Ratio Amount (in thousands) Ratio December 31, 2018 Total Capital (to risk-weighted assets) Company $ 412,879 13.63 % $ 299,148 > 9.875% N/A N/A First Mid Bank 350,361 12.85 % 269,171 > 9.875 $ 272,578 > 10.00% Soy Capital Bank 45,387 14.33 % 31,283 > 9.875 $ 31,679 > 10.00% Tier 1 Capital (to risk-weighted assets) Company 386,690 12.76 % 238,561 > 7.875 N/A N/A First Mid Bank 324,172 11.89 % 214,655 > 7.875 218,063 > 8.00 Soy Capital Bank 45,387 14.33 % 24,947 > 7.875 25,343 > 8.00 Common Equity Tier 1 Capital (to risk-weighted assets) Company 357,690 11.81 % 193,121 > 6.375 N/A N/A First Mid Bank 324,172 11.89 % 173,769 > 6.375 177,176 > 6.50 Soy Capital Bank 45,387 14.33 % 20,195 > 6.375 20,591 > 6.50 Tier 1 Capital (to average assets) Company 386,690 11.15 % 138,765 > 4.00 N/A N/A First Mid Bank 324,172 9.92 % 130,716 > 4.00 163,396 > 5.00 Soy Capital Bank 45,387 11.12 % 16,322 > 4.00 20,403 > 5.00 December 31, 2017 Total Capital (to risk-weighted assets) Company $ 290,843 12.70 % $ 211,848 > 9.25% N/A N/A First Mid Bank 282,621 12.39 % 211,064 > 9.25 $ 228,177 > 10.00% Tier 1 Capital (to risk-weighted assets) Company 270,866 11.83 % 166,043 > 7.25 N/A N/A First Mid Bank 262,644 11.51 % 165,428 > 7.25 182,542 > 8.00 Common Equity Tier 1 Capital (to risk-weighted assets) Company 246,866 10.78 % 131,690 > 5.75 N/A N/A First Mid Bank 262,644 11.51 % 131,202 > 5.75 148,315 > 6.50 Tier 1 Capital (to average assets) Company 270,866 9.91 % 109,381 > 4.00 N/A N/A First Mid Bank 262,644 9.63 % 109,113 > 4.00 136,392 > 5.00 The Company's risk-weighted assets, capital and capital ratios for December 31, 2018 are computed in accordance with Basel III capital rules which were effective January 1, 2015. Prior periods are computed following previous rules. See heading "Basel III" in the Overview section of this report for a more detailed description of Basel III rules. As of December 31, 2018 and 2017 , the Company, First Mid Bank, and Soy Capital Bank had capital ratios above the required minimums for regulatory capital adequacy, and First Mid Bank and Soy Capital Bank had capital ratios that qualified it for treatment as well-capitalized under the regulatory framework for prompt corrective action with respect to banks.

Disclosures of Fair Values of F

Disclosures of Fair Values of Financial Instruments	12 Months Ended
	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Fair Value of Assets and Liabilities	Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Fair value measurements must maximize the use of observable inputs and minimize the use of unobservable inputs. There is a hierarchy of three levels of inputs that may be used to measure fair value: Level 1 Valuations for assets and liabilities traded in active exchange markets, such as the New York Stock Exchange. Valuations are obtained from readily available pricing sources for market transactions involving identical assets or liabilities. Level 2 Valuations for assets and liabilities traded in less active dealer or broker markets. Valuations are obtained from third party pricing services for identical or comparable assets or liabilities which use observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities; quoted prices in active markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. Level 3 Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. Following is a description of the inputs and valuation methodologies used for assets measured at fair value on a recurring basis and recognized in the accompanying balance sheets, as well as the general classification of such assets pursuant to the valuation hierarchy. Available-for-Sale Securities. The fair value of available-for-sale securities is determined by various valuation methodologies. Where quoted market prices are available in an active market, securities are classified within Level 1. If quoted market prices are not available, then fair values are estimated by using quoted prices of securities with similar characteristics or independent asset pricing services and pricing models, the inputs of which are market-based or independently sources market parameters, including but not limited to, yield curves, interest rates, volatilities, prepayments, defaults, cumulative loss projections and cash flows. Such securities are classified in Level 2 of the valuation hierarchy. In certain cases where Level 1 or Level 2 inputs are not available, securities are classified within Level 3 of the hierarchy and include subordinated tranches of collateralized mortgage obligations and investments in trust preferred securities. Fair value determinations for Level 3 measurements of securities are the responsibility of the Treasury function of the Company. The Company contracts with a pricing specialist to generate fair value estimates on a monthly basis. The Treasury function of the Company challenges the reasonableness of the assumptions used and reviews the methodology to ensure the estimated fair value complies with accounting standards generally accepted in the United States, analyzes the changes in fair value and compares these changes to internally developed expectations and monitors these changes for appropriateness. The trust preferred securities are collateralized debt obligation securities that are backed by trust preferred securities issued by banks, thrifts, and insurance companies. The market for these securities at December 31, 2017 was not active and markets for similar securities are also not active. The inactivity was evidenced first by a significant widening of the bid-ask spread in the brokered markets in which trust preferred securities trade and then by a significant decrease in the volume of trades relative to historical levels. The new issue market is also inactive and will continue to be, as a result of the Dodd-Frank Act’s elimination of trust preferred securities from Tier 1 capital for certain holding companies. There are currently very few market participants who are willing and or able to transact for these securities. The market values for these securities are very depressed relative to historical levels. Given conditions in the debt markets today and the absence of observable transactions in the secondary and new issue markets, we determined: • The few observable transactions and market quotations that are available was not reliable for purposes of determining fair value at December 31, 2017, • An income valuation approach technique (present value technique) that maximizes the use of relevant observable inputs and minimizes the use of unobservable inputs was equally or more representative of fair value than the market approach valuation technique used at prior measurement dates, and • The trust preferred securities held by the Company were classified within Level 3 of the fair value hierarchy because we determined that significant adjustments were required to determine fair value at the measurement date. The following table presents the Company’s assets that are measured at fair value on a recurring basis and the level within the fair value hierarchy in which the fair value measurements fall as of December 31, 2018 and 2017 (in thousands): Fair Value Measurements Using: Fair Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) December 31, 2018 Available-for-sale securities: U.S. Treasury securities and obligations of U.S. government corporations and agencies $ 198,649 $ — $ 198,649 $ — Obligations of states and political subdivisions 192,579 — 191,612 967 Mortgage-backed securities 298,672 — 298,672 — Other securities 2,374 364 2,010 — Total available-for-sale securities $ 692,274 $ 364 $ 690,943 $ 967 December 31, 2017 Available-for-sale securities: U.S. Treasury securities and obligations of U.S. government corporations and agencies $ 113,770 $ — $ 113,770 $ — Obligations of states and political subdivisions 166,266 — 166,266 — Mortgage-backed securities 293,811 — 293,811 — Trust preferred securities 2,548 — — 2,548 Other securities 2,184 172 2,012 — Total available-for-sale securities $ 578,579 $ 172 $ 575,859 $ 2,548 The change in fair value of assets measured on a recurring basis using significant unobservable inputs (Level 3) for the years ended December 31, 2018 and 2017 is summarized as follows (in thousands): Obligations of State and Political Subdivisions Trust Preferred Securities December 31, 2018 December 31, 2017 December 31, 2018 December 31, 2017 Beginning balance $ — $ — $ 2,548 $ 1,652 Transfers into Level 3 967 — — — Transfers out of Level 3 — — — — Total gains or losses Included in net income — — — — Included in other comprehensive income (loss) — — 18 1,053 Purchases, issuances, sales and settlements — Purchases — — — — Issuances — — — — Sales — — (2,522 ) — Settlements — — (44 ) (157 ) Ending balance $ 967 $ — $ — $ 2,548 Total gains or losses for the period included in net income attributable to the change in unrealized gains or losses related to assets and liabilities still held at the reporting date $ — $ — $ — $ — Following is a description of the valuation methodologies used for assets measured at fair value on a nonrecurring basis and recognized in the accompanying balance sheets, as well as the general classification of such assets pursuant to the valuation hierarchy. Impaired Loans (Collateral Dependent) Loans for which it is probable that the Company will not collect all principal and interest due according to contractual terms are measured for impairment. Allowable methods for determining the amount of impairment and estimating fair value include using the fair value of the collateral for collateral dependent loans. If the impaired loan is identified as collateral dependent, then the fair value method of measuring the amount of impairment is utilized. This method requires obtaining a current independent appraisal of the collateral and applying a discount factor to the value. Impaired loans that are collateral dependent are classified within Level 3 of the fair value hierarchy when impairment is determined using the fair value method. Management establishes a specific allowance for loans that have an estimated fair value that is below the carrying value. The total carrying amount of loans for which a change in specific allowance has occurred as of December 31, 2018 was $19,481,000 and a fair value of $16,437,000 resulting in specific loss exposures of $3,044,000 . As of December 31, 2017 , the total carrying amount of loans for which a change specific allowance has occurred was $3,665,000 . These loans had a fair value of $3,053,000 which resulted in specific loss exposures of $612,000 . When there is little prospect of collecting principal or interest, loans, or portions of loans, may be charged-off to the allowance for loan losses. Losses are recognized in the period an obligation becomes uncollectible. The recognition of a loss does not mean that the loan has absolutely no recovery or salvage value, but rather that it is not practical or desirable to defer writing off the loan even though partial recovery may be affected in the future. Foreclosed Assets Held For Sale Other real estate owned acquired through loan foreclosure are initially recorded at fair value less costs to sell when acquired, establishing a new cost basis. The adjustment at the time of foreclosure is recorded through the allowance for loan losses. Due to the subjective nature of establishing the fair value when the asset is acquired, the actual fair value of the other real estate owned or foreclosed asset could differ from the original estimate. If it is determined that fair value declines subsequent to foreclosure, a valuation allowance is recorded through noninterest expense. Operating costs associated with the assets after acquisition are also recorded as noninterest expense. Gains and losses on the disposition of other real estate owned and foreclosed assets are netted and posted to other noninterest expense. The total carrying amount of other real estate owned as of December 31, 2018 was $2,534,000 . Other real estate owned included in the total carrying amount and measured at fair value on a nonrecurring basis during the period amounted to $836,000 . The total carrying amount of other real estate owned as of December 31, 2017 was $2,754,000 . Other real estate owned included in the total carrying amount and measured at fair value on a nonrecurring basis during the period amounted to $91,000 . The following table presents the fair value measurement of assets measured at fair value on a nonrecurring basis and the level within the fair value hierarchy in which the fair value measurements fall at December 31, 2018 and 2017 (in thousands): Fair Value Measurements Using Fair Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) December 31, 2018 Impaired loans (collateral dependent) $ 16,437 $ — $ — $ 16,437 Foreclosed assets held for sale 836 — — 836 December 31, 2017 Impaired loans (collateral dependent) $ 3,053 $ — $ — $ 3,053 Foreclosed assets held for sale 91 — — 91 Sensitivity of Significant Unobservable Inputs The following is a discussion of the sensitivity of significant unobservable inputs, the interrelationships between those inputs and other unobservable inputs used in recurring fair value measurement and of how those inputs might magnify or mitigate the effect of changes in the unobservable inputs on the fair value measurement. Trust Preferred Securities. The significant unobservable inputs used in the fair value measurement of the Company’s trust preferred securities were offered quotes and comparability adjustments. Significant increases (decreases) in any of those inputs in isolation resulted in a significantly lower (higher) fair value measurement. Generally, changes in either of those inputs would not affect the other input. The following table presents quantitative information about unobservable inputs used in recurring and nonrecurring Level 3 fair value measurements other than goodwill at December 31, 2018 . Fair Value (in thousands) Valuation Technique Unobservable Inputs Range (Weighted Average) Impaired loans (collateral dependent) 16,437 Third party valuations Discount to reflect realizable value 0 % - 40% ( 20 % ) Foreclosed assets held for sale 836 Third party valuations Discount to reflect realizable value less estimated selling costs 0 % - 40% ( 35 % ) The following table presents quantitative information about unobservable inputs used in recurring and nonrecurring Level 3 fair value measurements other than goodwill at December 31, 2017 . Fair Value (in thousands) Valuation Technique Unobservable Inputs Range (Weighted Average) Trust Preferred Securities $ 2,548 Discounted cash flow Discount rate 12.7% Constant prepayment rate (1) 1.3% Cumulative projected prepayments 21.6% Probability of default 0.5% Projected cures given deferral 0.0% Loss severity 97.7% Impaired loans (collateral dependent) 3,053 Third party valuations Discount to reflect realizable value 0% - 40% ( 20% ) Foreclosed assets held for sale $ 91 Third party valuations Discount to reflect realizable value less estimated selling costs 0% - 40% ( 35% ) (1) Every five years The methods utilized to estimate the fair value of financial instruments at December 31, 2017 did not necessarily represent an exit price. In accordance with the Company’s adoption of ASU 2016-01 as of January 1, 2018, the methods utilized to measure the fair value of financial instruments at December 31, 2018 represent an approximation of exit price; however, an actual exit price may differ. The following tables present estimated fair values of the Company’s financial instruments at December 31, 2018 and 2017 in accordance with FAS 107-1 and APB 28-1, codified with ASC 820 (in thousands): Carrying Amount Fair Value Level 1 Level 2 Level 3 December 31, 2018 Financial Assets Cash and due from banks $ 140,735 $ 140,735 $ 140,735 $ — $ — Federal funds sold 665 665 665 — — Certificates of deposit investments 7,569 7,569 — 7,569 — Available-for-sale securities 692,274 692,274 364 690,943 967 Held-to-maturity securities 69,436 67,909 — 67,909 — Loans held for sale 1,508 1,508 — 1,508 — Loans net of allowance for loan losses 2,616,822 2,541,037 — — 2,541,037 Interest receivable 16,881 16,881 — 16,881 — Federal Reserve Bank stock 7,390 7,390 — 7,390 — Federal Home Loan Bank stock 3,095 3,095 — 3,095 — Financial Liabilities Deposits 2,988,686 2,991,177 — 2,396,917 594,260 Securities sold under agreements to repurchase 192,330 192,179 — 192,179 — Interest payable 1,758 1,758 — 1,758 — Federal Home Loan Bank borrowings 119,745 119,704 — 119,704 — Other borrowings 7,724 7,724 — 7,724 — Junior subordinated debentures 29,000 24,418 — 24,418 — Carrying Amount Fair Value Level 1 Level 2 Level 3 December 31, 2017 Financial Assets Cash and due from banks $ 88,388 $ 88,388 $ 88,388 $ — $ — Federal funds sold 491 491 491 — — Certificates of deposit investments 1,685 1,692 — 1,692 — Available-for-sale securities 578,579 578,579 172 575,859 2,548 Held-to-maturity securities 69,332 68,457 — 68,457 — Loans held for sale 1,025 1,025 — 1,025 — Loans net of allowance for loan losses 1,918,499 1,899,678 — — 1,899,678 Interest receivable 10,832 10,832 — 10,832 — Federal Reserve Bank stock 5,160 5,160 — 5,160 — Federal Home Loan Bank stock 2,407 2,407 — 2,407 — Financial Liabilities Deposits 2,274,639 2,272,868 — 1,930,604 342,264 Securities sold under agreements to repurchase 155,388 155,394 — 155,394 — Interest payable 602 602 — 602 — Federal Home Loan Bank borrowings 60,038 59,968 — 59,968 — Other borrowings 10,313 10,313 — 10,313 — Junior subordinated debentures 24,000 18,050 — 18,050 —

Deferred Compensation Plan (Not

Deferred Compensation Plan (Notes)	12 Months Ended
	Dec. 31, 2018
Deferred Compensation Plan [Abstract]
Deferred Compensation Plan	Deferred Compensation Plan The Company follows the provisions of ASC 710, for purposes of the First Mid-Illinois Bancshares, Inc. Deferred Compensation Plan (“DCP”). At December 31, 2018 , the Company classified the cost basis of its common stock issued and held in trust in connection with the DCP of approximately $3,548,000 as treasury stock. The Company also classified the cost basis of its related deferred compensation obligation of approximately $3,548,000 as an equity instrument (deferred compensation). The DCP was effective as of June 1984. The purpose of the DCP is to enable directors, advisory directors, and key employees the opportunity to defer a portion of the fees and cash compensation paid by the Company as a means of maximizing the effectiveness and flexibility of compensation arrangements. The Company invests all participants’ deferrals in shares of common stock. Dividends paid on the shares are credited to participants’ DCP accounts and invested in additional shares. During 2018 and 2017 the Company issued 9,043 common shares and 6,875 common shares, respectively, pursuant to the DCP. The Company also maintains deferred compensation arrangements that were acquired in the Soy Capital acquisition. Individual participants in the agreements are primarily business development employees in the First Mid Insurance and First Mid Wealth Management divisions. The total liabilities associated with these agreements is included in other liabilities on the Company's consolidated balance sheet as of December 31, 2018 .

Stock Incentive Plan (Notes)

Stock Incentive Plan (Notes)	12 Months Ended
	Dec. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock Incentive Plan	Stock Incentive Plan At the Annual Meeting of Stockholders held April 26, 2017, the stockholders approved the 2017 Stock Incentive Plan ("SI Plan"). The SI Plan was implemented to succeed the Company's 2007 Stock Incentive Plan, which had a ten-year term. The SI Plan is intended to provide a means whereby directors, employees, consultants and advisors of the Company and its Subsidiaries may sustain a sense of proprietorship and personal involvement in the continued development and financial success of the Company and its Subsidiaries, thereby advancing the interests of the Company and its stockholders. Accordingly, directors and selected employees, consultants and advisors may be provided the opportunity to acquire shares of Common Stock of the Company on the terms and conditions established in the SI Plan. A maximum of 149,983 shares are authorized under the SI Plan. There have been no options awarded since 2008. The Company awarded 28,700 , 18,391 and 13,912 (under the 2007 Stock Incentive Plan) shares during 2018, 2017, 2016, respectively as stock and stock unit awards. The fair value of options granted was estimated on the grant date using the Black-Scholes option-pricing model. Expected volatility was based on historical volatility of the Company’s stock and other factors. The Company used historical data to estimate option exercises and employee termination within the valuation model; separate groups of employees who had similar historical exercise behavior were considered separately for valuation purposes. The expected term of options granted was derived from the output of the option valuation model and represented the period of time that options granted were expected to be outstanding. The risk-free rate for periods within the contractual life of the option was based on the U.S. Treasury yield curve in effect at the time of the grant. There were no options granted during 2018 , 2017 or 2016 . The following table summarizes the compensation cost, net of forfeitures, related to stock-based compensation for the years ended December 31, 2018, 2017 and 2016 (in thousands): 2018 2017 2016 Stock and stock unit awards: Pre-tax compensation expense $ 314 $ 954 $ 384 Income tax benefit (66 ) (334 ) (134 ) Total share-based compensation expense, net of income taxes $ 248 $ 620 $ 250 During 2017, the Board changed its award process and subsequently approved the acceleration of the vesting of all remaining outstanding restricted stock units. This resulted in total compensation expense for the year ended December 31, 2017 of approximately, $954,000 . A summary of option activity under the SI Plan and the 1997 Stock Incentive Plan as of December 31, 2018, 2017 and 2016 , and changes during the years then ended is presented below: 2018 Shares Weighted-Average Weighted-Average Aggregate Outstanding, beginning of year 10,500 $23.00 Granted 0 0.00 Exercised (10,500) 23.00 Forfeited or expired 0 0.00 Outstanding, end of year 0 $0.00 0.00 $ — Exercisable, end of year 0 $0.00 0.00 $ — The total intrinsic value of options exercised during 2018 was $176,000 . As of December 31, 2018 there were no outstanding options. 2017 Shares Weighted-Average Weighted-Average Aggregate Outstanding, beginning of year 40,500 $24.65 Granted 0 0.00 Exercised (27,500) 25.42 Forfeited or expired (2,500) 23.00 Outstanding, end of year 10,500 $23.00 0.96 $ 163,170 Exercisable, end of year 10,500 $23.00 0.96 $ 163,170 The total intrinsic value of options exercised during 2017 was $259,000 . There were no stock options for shares of common stock not considered in computing the aggregate intrinsic value of outstanding shares and exercisable shares for 2017 because they were anti-dilutive. 2016 Shares Weighted-Average Weighted-Average Aggregate Outstanding, beginning of year 45,500 $24.67 Granted 0 0.00 Exercised (2,500) 24.86 Forfeited or expired (2,500) 24.86 Outstanding, end of year 40,500 $24.65 1.42 $ 378,850 Exercisable, end of year 40,500 $24.65 1.42 $ 378,850 There were no options exercised during 2016. Stock options for 14,000 shares of common stock were not considered in computing the aggregate intrinsic value of outstanding shares and exercisable shares for 2016 because they were anti-dilutive. The following table summarizes non-vested stock and stock unit activity for the years ended December 31, 2018, 2017 and 2016 : 2018 2017 2016 Shares Weighted-avg Grant-date Fair Value Shares Weighted-avg Grant-date Fair Value Shares Weighted-avg Grant-date Fair Value Nonvested, beginning of year 0 $0.00 32,338 $22.64 30,169 $20.87 Granted 28,700 38.92 18,391 30.65 13,912 26.09 Vested (4,420) 38.92 (50,729) 25.54 (11,743) 22.18 Forfeited 0 0.00 0 0.00 0 0.00 Nonvested, end of year 24,280 $38.92 0 $0.00 32,338 $22.64 Fair value of shares vested $ 172,026 $ 260,483 $ 260,483 The fair value of the awards is amortized to compensation expense over the vesting periods of the awards (four years for annual awards and three years for cumulative awards) and is based on the market price of the Company’s common stock at the date of grant multiplied by the number of shares granted that are expected to vest. As of December 31, 2018, 2017 and 2016 , there was $795,000 , $0 , and $344,000 , respectively, of total unrecognized compensation cost related to unvested stock and stock unit awards under the SI Plan.

Retirement Plans (Notes)

Retirement Plans (Notes)	12 Months Ended
	Dec. 31, 2018
Retirement Benefits [Abstract]
Retirement Plans	Retirement Plans The Company has a defined contribution retirement plan which covers substantially all employees and which provides for a Company contribution equal to 4% of each participant’s compensation and a Company matching contribution of up to 100% of the first 3% and 50% of the next 2% of pre tax contributions made by each participant. Employee contributions are limited to the 402(g) limit of compensation. The total expense for the plan amounted to $1,881,000 , $1,630,000 and $1,383,000 in 2018 , 2017 and 2016 , respectively. The Company also has two agreements in place to pay $50,000 annually for 20 years from the retirement date to the surviving spouse of a deceased former senior officer of the Company and to a senior officer that retired December 31, 2013. Total expense under these two agreements amounted to $36,000 , $40,000 and $43,000 in 2018 , 2017 and 2016 , respectively. The current liability recorded for these two agreements was $533,000 and $597,000 , as of December 31, 2018 and 2017 , respectively.

Income Taxes (Notes)

Income Taxes (Notes)	12 Months Ended
	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The components of federal and state income tax expense for the years ended December 31, 2018, 2017 and 2016 were as follows (in thousands): 2018 2017 2016 Current Federal $ 4,841 $ 9,825 $ 11,375 State 2,781 2,719 2,953 Total Current 7,622 12,544 14,328 Deferred Federal 2,818 2,047 (1,940 ) State 1,465 451 (448 ) Total Deferred 4,283 2,498 (2,388 ) Total $ 11,905 $ 15,042 $ 11,940 Recorded income tax expense differs from the expected tax expense (computed by applying the applicable statutory U.S. federal tax rate of 21% for 2018 and 35% for 2017 and 2016 to income before income taxes). During 2018 , 2017 and 2016 , the Company was in a graduated tax rate position. The principal reasons for the difference are as follows (in thousands): 2018 2017 2016 Expected income taxes $ 10,186 $ 14,604 $ 11,823 Effects of: Tax-exempt income from bank owned life insurance (283 ) (573 ) (235 ) Other tax exempt income (1,598 ) (2,223 ) (1,577 ) Nondeductible interest expense 43 28 21 State taxes, net of federal taxes 3,354 2,062 1,628 Other items 218 (266 ) 280 Adjustment of deferred tax assets and liabilities for enacted change in tax laws — 1,410 — Effect of marginal tax rate (15 ) — — Total $ 11,905 $ 15,042 $ 11,940 On December 22, 2017, the United States enacted certain tax reforms through the Tax Cuts and Jobs Act , which changes existing tax laws, most significantly a change in the statutory corporate tax rate from 35% to 21% . As a result of this enactment, the Company incurred additional one-time income tax expense of approximately $1.4 million during the fourth quarter of 2017, primarily due to re-measurement of deferred tax assets and liabilities. Tax expense recorded by the Company during 2018 , 2017 and 2016 did not include any interest or penalties. Tax returns filed with the Internal Revenue Service and Illinois Department of Revenue are subject to review by law under a three-year statute of limitations. The Company is no longer subject to U.S. federal or state income tax examinations by tax authorities for years before 2015 . The tax effects of the temporary differences that gave rise to significant portions of the deferred tax assets and deferred tax liabilities at December 31, 2018 and 2017 are presented below (in thousands): 2018 2017 Deferred tax assets: Allowance for loan losses $ 7,251 $ 5,694 Available-for-sale investment securities 2,644 941 Deferred compensation 3,593 749 Supplemental retirement 152 170 Core deposit premium and other intangible assets 657 664 Pass thru activities — 126 Other-than-temporary impairment on securities — 317 Stock compensation expense 43 — Purchase accounting — 475 Acquisition costs 190 210 Other 977 596 Total gross deferred tax assets 15,507 9,942 Deferred tax liabilities: Deferred loan costs 126 26 Intangibles amortization 4,135 3,685 Prepaid expenses 297 232 FHLB stock dividend 232 158 Depreciation 2,149 1,207 Deferred revenue 81 58 Purchase accounting 6,066 — Accumulated accretion 199 112 Mortgage servicing rights 578 240 Total gross deferred tax liabilities 13,863 5,718 Net deferred tax assets $ 1,644 $ 4,224 Net deferred tax assets are recorded in other assets on the consolidated balance sheets. No valuation allowance related to deferred tax assets was recorded at December 31, 2018 and 2017 as management believes it is more likely than not that the deferred tax assets will be fully realized.

Dividend Restrictions (Notes)

Dividend Restrictions (Notes)	12 Months Ended
	Dec. 31, 2018
Statutory Accounting Practices, Statutory Amount Available for Dividend Payments [Abstract]
Dividend Restrictions	Dividend Restrictions The National Bank Act imposes limitations on the amount of dividends that may be paid by a national bank, such as First Mid Bank and Soy Capital Bank. Generally, a national bank may pay dividends out of its undivided profits, in such amounts and at such times as the bank’s board of directors deems prudent. Without prior OCC approval, however, a national bank may not pay dividends in any calendar year which, in the aggregate, exceed the bank’s year-to-date net income plus the bank’s adjusted retained net income for the two preceding years. Factors that could adversely affect First Mid Bank’s net income include other-than-temporary impairment on investment securities that result in credit losses and economic conditions in industries where there are concentrations of loans outstanding that result in impairment of these loans and, consequently loan charges and the need for increased allowances for losses. See “Item 1A. Risk Factors,” Note 4 – “Investment Securities” and Note 5 – “Loans” for a more detailed discussion of the factors. The payment of dividends by any financial institution or its holding company is affected by the requirement to maintain adequate capital pursuant to applicable capital adequacy guidelines and regulations, and a financial institution generally is prohibited from paying any dividends if, following payment thereof, the institution would be undercapitalized. As described above, First Mid Bank exceeded their minimum capital requirements under applicable guidelines as of December 31, 2018 . As of December 31, 2018 , approximately $28.8 million was available to be paid as dividends to the Company by First Mid Bank. Notwithstanding the availability of funds for dividends, however, the OCC may prohibit the payment of any dividends by First Mid Bank if the OCC determines that such payment would constitute an unsafe or unsound practice.

Commitments and Contingent Liab

Commitments and Contingent Liabilities (Notes)	12 Months Ended
	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingent Liabilities	Commitments and Contingent Liabilities First Mid Bank and Soy Capital Bank enter into financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include lines of credit, letters of credit and other commitments to extend credit. Each of these instruments involves, to varying degrees, elements of credit, interest rate and liquidity risk in excess of the amounts recognized in the consolidated balance sheets. The Company uses the same credit policies and requires similar collateral in approving lines of credit and commitments and issuing letters of credit as it does in making loans. The exposure to credit losses on financial instruments is represented by the contractual amount of these instruments. However, the Company does not anticipate any losses from these instruments. The off-balance sheet financial instruments whose contract amounts represent credit risk at December 31, 2018 and 2017 were as follows (in thousands): 2018 2017 Unused commitments and lines of credit: Commercial real estate $ 102,015 $ 73,268 Commercial operating 298,657 223,960 Home equity 43,026 38,318 Other 110,226 69,333 Total $ 553,924 $ 404,879 Standby letters of credit $ 10,183 $ 10,626 Commitments to originate credit represent approved commercial, residential real estate and home equity loans that generally are expected to be funded within ninety days . Lines of credit are agreements by which the Company agrees to provide a borrowing accommodation up to a stated amount as long as there is no violation of any condition established in the loan agreement. Both commitments to originate credit and lines of credit generally have fixed expiration dates or other termination clauses and may require payment of a fee. Since many of the lines and some commitments are expected to expire without being drawn upon, the total amounts do not necessarily represent future cash requirements. Standby letters of credit are conditional commitments issued by the Company to guarantee the financial performance of customers to third parties. Standby letters of credit are primarily issued to facilitate trade or support borrowing arrangements and generally expire in one year or less . The credit risk involved in issuing letters of credit is essentially the same as that involved in extending credit facilities to customers. The maximum amount of credit that would be extended under letters of credit is equal to the total off-balance sheet contract amount of such instrument at December 31, 2018 and 2017 . The Company's deferred revenue under standby letters of credit was nominal. The Company is also subject to claims and lawsuits that arise primarily in the ordinary course of business. It is the opinion of management that the disposition of ultimate resolution of such claims and lawsuits will not have a material adverse effect on the consolidated financial position, results of operations and cash flows of the Company.

Related Party Transactions (Not

Related Party Transactions (Notes)	12 Months Ended
	Dec. 31, 2018
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions Certain officers, directors and principal stockholders of the Company and its subsidiaries, their immediate families or their affiliated companies (“related parties”) have loans with one or more of the subsidiaries. These loans are made in the ordinary course of business on substantially the same terms, including interest and collateral, as those prevailing for comparable transactions with others. Loans to related parties totaled approximately $94,006,000 and $76,835,000 at December 31, 2018 and 2017 , respectively. Activity during 2018 and 2017 was as follows (in thousands): 2018 2017 Beginning balance $ 76,835 $ 54,502 New loans 24,957 29,725 Loan repayments (7,786 ) (7,392 ) Ending balance $ 94,006 $ 76,835 Deposits from related parties held by First Mid Bank at December 31, 2018 and 2017 totaled $96,624,000 and $110,324,000 , respectively.

Business Combinations (Notes)

Business Combinations (Notes)	12 Months Ended
	Dec. 31, 2018
Business Combinations [Abstract]
Business Combination Disclosure [Text Block]	Business Combinations SCB Bancorp, Inc. On June 12, 2018, The Company and Project Almond Merger Sub LLC, a newly formed Illinois limited liability company and wholly-owned subsidiary of the Company (“Almond Merger Sub”), entered into an Agreement and Plan of Merger (the “SCB Merger Agreement”) with SCB Bancorp, Inc., an Illinois corporation (“SCB”), pursuant to which, among other things, the Company agreed to acquire 100% of the issued and outstanding shares of SCB pursuant to a business combination whereby SCB merged with and into Almond Merger Sub, whereupon the separate corporate existence of SCB ceased and Merger Sub continued as the surviving company and a wholly-owned subsidiary of the Company (the “SCB Merger”). Subject to the terms and conditions of the SCB Merger Agreement, at the effective time of the SCB Merger, each share of common stock, par value $7.50 per share, of SCB issued and outstanding immediately prior to the effective time of the SCB Merger were converted into and became the right to receive, at the election of each stockholder, either $307.93 in cash or 8.0228 shares of common stock, par value $4.00 per share, of the Company and cash in lieu of fractional shares, less any applicable taxes required to be withheld. In addition, immediately prior to the closing of the proposed merger, SCB will paid a special dividend to its shareholders in the aggregate amount of approximately $25 million. The SCB Merger was subject to customary closing conditions, including the approval of the appropriate regulatory authorities and of the stockholders of SCB. The SCB Merger was completed November 15, 2018 and an aggregate of 1,330,571 shares of common stock were issued, and approximately $19,046,000 was paid, to the stockholders of SCB, including cash in lieu of fractional shares. It is anticipated that SCB’s wholly-owned bank subsidiary, Soy Capital Bank and Trust Company (“Soy Capital Bank”), will be merged with and into First Mid Bank on April 6, 2019. At the time of the bank merger, Soy Capital Bank’s banking offices will become branches of First Mid Bank. As a result of the acquisition, the Company will have an opportunity to increase its deposit base and reduce transaction costs. The Company also expects to reduce costs through economies of scale. The acquisition was accounted for under the acquisition method of accounting in accordance with ASC 805, “Business Combinations ("ASC 805"),” and accordingly the assets and liabilities were recorded at their estimated fair values as of the date of acquisition. Fair values are subject to refinement for up to one year after the closing date of November 15, 2018 as additional information regarding the closing date fair values become available. The total consideration paid was used to determine the amount of goodwill resulting from the transaction. As the total consideration paid exceeded the net assets acquired, goodwill of $18.6 million was recorded for the acquisition. Goodwill recorded in the transaction, which reflects the synergies and economies of scale expected from combining operations and the enhanced revenue opportunities from the Company’s service capabilities, is not tax deductible, and was all assigned to the banking segment of the Company. The following table summarizes the estimated fair values of assets acquired and liabilities assumed at the date of the Soy Capital Bank acquisition (in thousands). Acquired Book Value Adjustments As Recorded by First Mid Bank Assets Cash & due from banks $ 65,112 — $ 65,112 Investment Securities 97,545 (41 ) 97,504 Loans 255,429 (7,868 ) 247,561 Allowance for loan losses (4,491 ) 4,491 — Other real estate owned 783 (345 ) 438 Premises and equipment 10,115 1,228 11,343 Goodwill 6,782 11,854 18,636 Core deposit intangible — 7,269 7,269 Other Intangibles 1,228 11,070 12,298 Other assets 24,821 (5,926 ) 18,895 Total assets acquired $ 457,324 $ 21,732 $ 479,056 Liabilities and Stockholders' Equity Deposits 348,314 (343 ) 347,971 Securities sold under agreements to repurchase 21,180 — 21,180 FHLB advances 19,000 (29 ) 18,971 Other borrowings 7,724 — 7,724 Other liabilities 15,904 — 15,904 Total liabilities assumed 412,122 (372 ) 411,750 Net assets acquired 45,202 22,104 67,306 Consideration Paid Cash 19,046 Common stock 48,260 Total consideration paid 67,306 The Company has recognized approximately $907,000 , pre-tax, of acquisition costs for the Soy Capital Bank acquisition. These costs are included in legal and professional and other expense. Of the $7.9 million fair value adjustment to loans, approximately $7.2 million is being accreted to interest income over the remaining term of the loans. The differences between fair value and acquired value of the assumed time deposits of $(343,000) , of the assumed FHLB advances of $(29,000) , are being amortized to interest expense over the remaining life of the liabilities. The core deposit intangible asset, with a fair value of $7.3 million , will be amortized on an accelerated basis over its estimated life of 10 years . In addition, the Company recorded a $4.2 million intangible asset for the customer list of Soy Bank's Ag services business line and $8.1 million intangible asset for the customer list for Soy Bank's Insurance business line. These intangibles are being amortized over the estimated life of 12 years and 11 years, respectively. The following unaudited pro forma condensed combined financial information presents the results of operations of the Company, including the effects of the purchase accounting adjustments and acquisition expenses, had the Soy Capital Bank acquisition taken place at the beginning of the period (in thousands, except share data): Twelve months ended December 31, 2018 2017 Net interest income 123,161 105,925 Provision for loan losses 8,667 7,462 Non-interest income 52,257 47,719 Non-interest expense 112,246 100,933 Income before income taxes 54,505 45,249 Income tax expense 12,711 16,352 Net income available to common stockholders $ 41,794 $ 28,897 Earnings per share Basic $2.67 $2.08 Diluted $2.67 $2.08 Basic weighted average shares outstanding 15,646,359 13,862,230 Diluted weighted average shares outstanding 15,659,818 13,867,105 The unaudited pro forma condensed combined financial statements do not reflect any anticipated cost savings and revenue enhancements. Accordingly, the pro forma results of operations of the Company as of and after the Soy Capital Bank business combination may not be indicative of the results that actually would have occurred if the combination had been in effect during the periods presented or of the results that may be attained in the future. First BancTrust Corporation On December 11, 2017, the Company and Project Hawks Merger Sub LLC (formerly known as Project Hawks Merger Sub Corp.), a newly formed Delaware limited liability company and wholly-owned subsidiary of the Company (“Hawks Merger Sub”), entered into an Agreement and Plan of Merger (as amended as of January 18, 2018, the “First Bank Merger Agreement") with First BancTrust Corporation, a Delaware corporation (“First Bank”), pursuant to which, among other things, the Company agreed to acquire 100% of the issued and outstanding shares of First Bank pursuant to a business combination whereby First Bank will merge with and into Hawks Merger Sub, with Hawks Merger Sub as the surviving entity and a wholly-owned subsidiary of the Company (the “First Bank Merger”). At the effective time of the First Bank Merger, each share of common stock, par value $0.01 per share, of First Bank issued and outstanding immediately prior to the effective time of the First Bank Merger (other than shares held in treasury by First Bank and shares held by stockholders who had properly made and not withdrawn a demand for appraisal rights under Delaware law) converted into and become the right to receive, (a) $5.00 in cash and (b) 0.800 shares of common stock, par value $4.00 per share, of the Company and cash in lieu of fractional shares, less any applicable taxes required to be withheld and subject to certain adjustments, all as set forth in the First Bank Merger Agreement. On May 1, 2018, the Company issued an aggregate total of 1,643,900 shares of common stock valued at $37.32 per share and paid approximately $10,275,000 , including cash in lieu of fractional shares. First Bank’s wholly-owned bank subsidiary, First Bank & Trust, IL (“First Bank & Trust”), merged with and into First Mid Bank on August 10, 2018. At the time of the bank merger, First Bank & Trust’s banking offices became branches of First Mid Bank. As a result of the acquisition, the Company will have an opportunity to increase its deposit base and reduce transaction costs. The Company also expects to reduce costs through economies of scale. The acquisition was accounted for under the acquisition method of accounting in accordance with ASC 805, “Business Combinations ("ASC 805"),” and accordingly the assets and liabilities were recorded at their estimated fair values as of the date of acquisition. Fair values are subject to refinement for up to one year after the closing date of May 1, 2018 as additional information regarding the closing date fair values become available. The total consideration paid was used to determine the amount of goodwill resulting from the transaction. As the total consideration paid exceeded the net assets acquired, goodwill of $26.5 million was recorded for the acquisition. Goodwill recorded in the transaction, which reflects the synergies and economies of scale expected from combining operations and the enhanced revenue opportunities from the Company’s service capabilities, is not tax deductible, and was all assigned to the banking segment of the Company. The following table summarizes the estimated fair values of assets acquired and liabilities assumed at the date of the First Bank acquisition (in thousands). Acquired Adjustments As Recorded by Assets Cash & due from banks $ 20,598 $ 20,598 Investment Securities 59,906 (320 ) 59,586 Loans 371,156 (7,875 ) 363,281 Allowance for loan losses (4,412 ) 4,412 — Other real estate owned 547 (12 ) 535 Premises and equipment 10,126 (689 ) 9,437 Goodwill 543 25,948 26,491 Core deposit intangible — 5,224 5,224 Other assets 16,389 (256 ) 16,133 Total assets acquired $ 474,853 $ 26,432 $ 501,285 Liabilities and Stockholders' Equity Deposits $ 384,323 $ 1,301 $ 385,624 FHLB advances 31,000 (328 ) 30,672 Subordinated debentures 6,186 (1,451 ) 4,735 Other liabilities 8,665 (36 ) 8,629 Total liabilities assumed 430,174 (514 ) 429,660 Net assets acquired $ 44,679 $ 26,946 $ 71,625 Consideration Paid Cash $ 10,275 Common stock 61,350 Total consideration paid $ 71,625 The Company has recognized approximately $7.3 million , pre-tax, of acquisition costs for the First Bank acquisition. These costs are included in legal and professional and other expense. Of the $7.9 million fair value adjustment to loans, approximately $3.6 million is being accreted to interest income over the remaining term of the loans. The differences between fair value and acquired value of the assumed time deposits of $1.3 million , of the assumed FHLB advances of $(328,000) and of the assumed subordinated debentures of $(1,451,000) , are being amortized to interest expense over the remaining life of the liabilities. The core deposit intangible asset, with a fair value of $5.2 million , will be amortized on an accelerated basis over its estimated life of 10 years . The following unaudited pro forma condensed combined financial information presents the results of operations of the Company, including the effects of the purchase accounting adjustments and acquisition expenses, had the First Bank acquisition taken place at the beginning of the period (in thousands, except share data): Twelve months ended December 31, 2018 2017 Net interest income 117,450 110,990 Provision for loan losses 8,867 8,365 Non-interest income 36,526 34,060 Non-interest expense 94,464 94,843 Income before income taxes 50,645 41,842 Income tax expense 12,456 15,849 Net income available to common stockholders $ 38,189 $ 25,993 Earnings per share Basic $2.60 $1.83 Diluted $2.59 $1.83 Basic weighted average shares outstanding 14,704,888 14,175,559 Diluted weighted average shares outstanding 14,721,708 14,180,434

Leases (Notes)

Leases (Notes)	12 Months Ended
	Dec. 31, 2018
Leases [Abstract]
Leases	Leases The Company has several noncancellable operating leases, primarily for property rental of banking buildings. These leases are for terms from one year to fifteen years and generally contain renewal options for periods ranging from one year to five years . Rental expense for these leases was $2,833,000 , $2,720,000 and $2,620,000 for the years ended December 31, 2018, 2017 and 2016 , respectively. Future minimum lease payments under operating leases are (in thousands): Operating Leases 2019 $ 2,880 2020 2,495 2021 2,279 2022 2,223 2023 2,197 Thereafter 33,255 Total minimum lease payments $ 45,329

Parent Company Only Financial S

Parent Company Only Financial Statements (Notes)	12 Months Ended
	Dec. 31, 2018
Condensed Financial Information Disclosure [Abstract]
Parent Company Only Financial Statements	Parent Company Only Financial Statements Presented below are condensed balance sheets, statements of income and cash flows for the Company (in thousands): First Mid-Illinois Bancshares, Inc. (Parent Company) Balance Sheets December 31, 2018 2017 Assets Cash $ 18,571 $ 8,296 Premises and equipment, net 3,127 2,654 Investment in subsidiaries 498,544 328,830 Other assets 4,637 3,555 Total Assets $ 524,879 $ 343,335 Liabilities and Stockholders’ equity Liabilities Debt 29,000 34,313 Other liabilities 20,015 1,058 Total Liabilities 49,015 35,371 Stockholders’ equity 475,864 307,964 Total Liabilities and Stockholders’ equity $ 524,879 $ 343,335 First Mid-Illinois Bancshares, Inc. (Parent Company) Statements of Income and Comprehensive Income Years ended December 31, 2018 2017 2016 Income: Dividends from subsidiaries $ 21,694 $ 18,925 $ 19,475 Other income 171 1,227 66 Total income 21,865 20,152 19,541 Operating expenses 5,424 3,902 3,491 Income before income taxes and equity in undistributed earnings of subsidiaries 16,441 16,250 16,050 Income tax benefit 1,274 864 1,073 Income before equity in undistributed earnings of subsidiaries 17,715 17,114 17,123 Equity in undistributed earnings of subsidiaries 18,885 9,570 4,717 Net income 36,600 26,684 21,840 Other comprehensive income (loss), net of taxes (4,169 ) 3,525 (6,484 ) Comprehensive income $ 32,431 $ 30,209 $ 15,356 First Mid-Illinois Bancshares, Inc. (Parent Company) Statements of Cash Flows Years ended December 31, 2018 2017 2016 Cash flows from operating activities: Net income $ 36,600 $ 26,684 $ 21,840 Adjustments to reconcile net income to net cash provided by operating activities: Depreciation, amortization, accretion, net 90 82 87 Dividends received from subsidiary 21,694 18,925 19,475 Equity in undistributed earnings of subsidiaries (18,885 ) (9,570 ) (4,717 ) Increase in other assets (1,645 ) (19,348 ) (111,379 ) Increase in other liabilities 79 733 153 Net cash provided by (used in) operating activities 37,933 17,506 (74,541 ) Cash flows from investing activities: Investment in subsidiary (13,430 ) — (5,000 ) Net cash from business acquisition (29,321 ) — 68,798 Net cash provided by (used in) investing activities (42,751 ) — 63,798 Cash flows from financing activities: Repayment of short-term debt — (4,000 ) (3,000 ) Proceeds from short-term debt — — 7,000 Repayment of long-term debt (10,313 ) (3,750 ) (938 ) Proceeds from long-term debt — — 15,000 Proceeds from issuance of common stock 36,645 4,399 195 Payment to repurchase common stock (138 ) (797 ) — Direct expense related to capital transactions (2,309 ) (216 ) (229 ) Dividends paid on preferred stock — — (1,286 ) Dividends paid on common stock (8,792 ) (7,228 ) (5,277 ) Net cash provided by (used in) financing activities 15,093 (11,592 ) 11,465 Increase (decrease) in cash 10,275 5,914 722 Cash at beginning of year 8,296 2,382 1,660 Cash at end of year $ 18,571 $ 8,296 $ 2,382

Quarterly Financial Data -- Una

Quarterly Financial Data -- Unaudited (Notes)	12 Months Ended
	Dec. 31, 2018
Quarterly Financial Data [Abstract]
Quarterly Financial Data - Unaudited	Quarterly Financial Data - Unaudited The following table presents summarized quarterly data for each of the two years ended December 31, 2018 and 2017 (in thousands): Quarters ended in 2018 March 31 June 30 September 30 December 31 Selected operations data: Interest income $ 25,158 $ 30,131 $ 33,488 $ 35,788 Interest expense 1,963 2,677 3,401 4,786 Net interest income 23,195 27,454 30,087 31,002 Provision for loan losses 1,055 1,877 2,551 3,184 Net interest income after provision for loan losses 22,140 25,577 27,536 27,818 Other income 7,487 8,361 7,919 11,647 Other expense 18,374 20,796 24,490 26,320 Income before income taxes 11,253 13,142 10,965 13,145 Income taxes 2,863 3,105 2,731 3,206 Net income available to common stockholders $ 8,390 $ 10,037 $ 8,234 $ 9,939 Basic earnings per common share $0.66 $0.72 $0.54 $0.62 Diluted earnings per common share 0.66 0.72 0.54 0.62 Quarters ended in 2017 March 31 June 30 September 30 December 31 Selected operations data: Interest income $ 24,182 $ 25,446 $ 24,614 $ 25,313 Interest expense 1,410 1,493 1,741 1,838 Net interest income 22,772 23,953 22,873 23,475 Provision for loan losses 1,722 1,840 1,489 2,411 Net interest income after provision for loan losses 21,050 22,113 21,384 21,064 Other income 7,496 7,969 7,661 7,210 Other expense 19,202 17,955 17,912 19,152 Income before income taxes 9,344 12,127 11,133 9,122 Income taxes 3,080 3,927 3,538 4,497 Net income 6,264 8,200 7,595 4,625 Dividends on preferred shares — — — — Net income available to common stockholders $ 6,264 $ 8,200 $ 7,595 $ 4,625 Basic earnings per common share $ 0.50 $ 0.66 $ 0.61 $ 0.37 Diluted earnings per common share 0.50 0.66 0.61 0.37

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Accounting and Consolidation	Basis of Accounting and Consolidation The accompanying consolidated financial statements include the accounts of First Mid-Illinois Bancshares, Inc. (“Company”) and its wholly-owned subsidiaries: Mid-Illinois Data Services, Inc. (“MIDS”), First Mid Wealth Management, First Mid Bank & Trust, N.A. (“First Mid Bank”), Soy Capital Bank and Trust Company ("Soy Capital Bank"), and First Mid Insurance Group (“First Mid Insurance”). All significant intercompany balances and transactions have been eliminated in consolidation. Certain amounts in the prior year’s consolidated financial statements have been reclassified to conform to the 2018 presentation and there was no impact on net income or stockholders’ equity from these reclassifications. The Company operates as a single segment entity for financial reporting purposes. The accounting and reporting policies of the Company conform to accounting principles generally accepted in the United States of America. Following is a description of the more significant of these policies.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires the Company to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. The Company uses estimates and employs the judgments of management in determining the amount of its allowance for loan losses and income tax accruals and deferrals, in its fair value measurements of investment securities, and in the evaluation of impairment of loans, goodwill, investment securities, and premises and equipment. As with any estimate, actual results could differ from these estimates. Material estimates that are particularly susceptible to significant change relate to the determination of the allowance for loan losses. In connection with the determination of the allowance for loan losses, management obtains independent appraisals for significant properties.
Fair Value Measurements	Fair Value Measurements The fair value of a financial instrument is defined as the amount at which the instrument could be exchanged in a current transaction between willing parties, other than in a forced or liquidation sale. The Company estimates the fair value of a financial instrument using a variety of valuation methods. Where financial instruments are actively traded and have quoted market prices, quoted market prices are used for fair value. When the financial instruments are not actively traded, other observable market inputs, such as quoted prices of securities with similar characteristics, may be used, if available, to determine fair value. When observable market prices do not exist, the Company estimates fair value. The Company’s valuation methods consider factors such as liquidity and concentration concerns. Other factors such as model assumptions, market dislocations, and unexpected correlations can affect estimates of fair value. Imprecision in estimating these factors can impact the amount of revenue or loss recorded. At the end of each quarter, the Company assesses the valuation hierarchy for each asset or liability measured. From time to time, assets or liabilities may be transferred within hierarchy levels due to changes in availability of observable market inputs to measure fair value at the measurement date. Transfers into or out of hierarchy levels are based upon the fair value at the beginning of the reporting period. A more detailed description of the fair values measured at each level of the fair value hierarchy can be found in Note 11 – “Disclosures of Fair Values of Financial Instruments.”
Cash and Cash Equivalents and Certificates of Deposit Investments	Cash and Cash Equivalents For purposes of reporting cash flows, cash equivalents include non-interest bearing and interest bearing cash and due from banks and federal funds sold. Generally, federal funds are sold for one-day periods. Certificates of Deposit Investments Certificates of deposit investments have original maturities of three to five years and are carried at cost.
Investment Securities	Investment Securities The Company classifies its investments in debt securities as either held-to-maturity or available-for-sale in accordance with ASC 320. Securities classified as held-to-maturity are recorded at cost or amortized cost. Available-for-sale securities are carried at fair value. Fair value calculations are based on quoted market prices when such prices are available. If quoted market prices are not available, estimates of fair value are computed using a variety of techniques, including extrapolation from the quoted prices of similar instruments or recent trades for thinly traded securities, fundamental analysis, or through obtaining purchase quotes. Due to the subjective nature of the valuation process, it is possible that the actual fair values of these investments could differ from the estimated amounts, thereby affecting the financial position, results of operations and cash flows of the Company. If the estimated value of investments is less than the cost or amortized cost, the Company evaluates whether an event or change in circumstances has occurred that may have a significant adverse effect on the fair value of the investment. If such an event or change has occurred and the Company determines that the impairment is other-than-temporary, a further determination is made as to the portion of impairment that is related to credit loss. The impairment of the investment that is related to the credit loss is expensed in the period in which the event or change occurred. The remainder of the impairment is recorded in other comprehensive income.
Loans	Loans Loans are stated at the principal amount outstanding net of unearned discounts, unearned income and the allowance for loan losses. Unearned income includes deferred loan origination fees reduced by loan origination costs and is amortized to interest income over the life of the related loan using methods that approximate the effective interest rate method. Interest on substantially all loans is credited to income based on the principal amount outstanding. The Company’s policy is to discontinue the accrual of interest income on any loan that becomes ninety days past due as to principal or interest or earlier when, in the opinion of management there is reasonable doubt as to the timely collection of principal or interest. Nonaccrual loans are returned to accrual status when, in the opinion of management, the financial position of the borrower indicates there is no longer any reasonable doubt as to the timely collectability of interest or principal. Loans expected to be sold are classified as held for sale in the consolidated financial statements and are recorded at the lower of aggregate cost or market value, taking into consideration future commitments to sell the loans.
Allowance for Loan Losses	Allowance for Loan Losses The Company believes the allowance for loan losses is the critical accounting policy that requires the most significant judgments and assumptions used in the preparation of its consolidated financial statements. An estimate of potential losses inherent in the loan portfolio is determined and an allowance for those losses is established by considering factors including historical loss rates, expected cash flows and estimated collateral values. In assessing these factors, the Company uses organizational history and experience with credit decisions and related outcomes. The allowance for loan losses represents the best estimate of losses inherent in the existing loan portfolio. The allowance for loan losses is increased by the provision for loan losses charged to expense and reduced by loans charged off, net of recoveries. The Company evaluates the allowance for loan losses quarterly. If the underlying assumptions later prove to be inaccurate based on subsequent loss evaluations, the allowance for loan losses is adjusted. The Company estimates the appropriate level of allowance for loan losses by separately evaluating impaired and nonimpaired loans. A specific allowance is assigned to an impaired loan when expected cash flows or collateral do not justify the carrying amount of the loan. The methodology used to assign an allowance to a nonimpaired loan is more subjective. Generally, the allowance assigned to nonimpaired loans is determined by applying historical loss rates to existing loans with similar risk characteristics, adjusted for qualitative factors including the volume and severity of identified classified loans, changes in economic conditions, changes in credit policies or underwriting standards, and changes in the level of credit risk associated with specific industries and markets. Because the economic and business climate in any given industry or market, and its impact on any given borrower, can change rapidly, the risk profile of the loan portfolio is continually assessed and adjusted when appropriate. Notwithstanding these procedures, there still exists the possibility that the assessment could prove to be significantly incorrect and that an immediate adjustment to the allowance for loan losses would be required.
Premises and Equipment	Premises and Equipment Premises and equipment are stated at cost less accumulated depreciation and amortization. Depreciation and amortization is charged to expense and determined principally by the straight-line method over the estimated useful lives of the assets. The estimated useful lives for each major depreciable classification of premises and equipment are as follows:
Goodwill and Intangible Assets	Goodwill and Intangible Assets The Company has goodwill from business combinations, identifiable intangible assets assigned to core deposit relationships and customer lists acquired, and intangible assets arising from the rights to service mortgage loans for others. Identifiable intangible assets generally arise from branches acquired that the Company accounted for as purchases. Such assets consist of the excess of the purchase price over the fair value of net assets acquired, with specific amounts assigned to core deposit relationships and customer lists primarily related to insurance agency. Intangible assets are amortized by the straight-line method over various periods up to fifteen years. Management reviews intangible assets for possible impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. In accordance with the provisions of SFAS No. 142, “ Goodwill and Other Intangible Assets ,” codified into ASC 350, the Company performed testing of goodwill for impairment as of September 30, 2018 and determined that, as of that date, goodwill was not impaired. Management also concluded that the remaining amounts and amortization periods were appropriate for all intangible assets.
Other Real Estate Owned	Other Real Estate Owned Other real estate owned acquired through loan foreclosure is initially recorded at fair value less costs to sell when acquired, establishing a new cost basis. The adjustment at the time of foreclosure is recorded through the allowance for loan losses. Due to the subjective nature of establishing the fair value when the asset is acquired, the actual fair value of the other real estate owned or foreclosed asset could differ from the original estimate. If it is determined that fair value temporarily declines subsequent to foreclosure, a valuation allowance is recorded through noninterest expense. Operating costs associated with the assets after acquisition are also recorded as noninterest expense. Gains and losses on the disposition of other real estate owned and foreclosed assets are netted and posted to other noninterest expense.
Federal Home Loan Bank Stock	Federal Home Loan Bank Stock Federal Home Loan Bank stock is a required investment for institutions that are members of the Federal Home Loan Bank system. The required investment in the common stock is based on a predetermined formula.
Income Taxes	Income Taxes The Company and its subsidiaries file consolidated federal and state income tax returns with each organization computing its taxes on a separate company basis. Amounts provided for income tax expense are based on income reported for financial statement purposes rather than amounts currently payable under tax laws. Deferred tax assets and liabilities are recognized for future tax consequences attributable to the temporary differences existing between the financial statement carrying amounts of assets and liabilities and their respective tax basis, as well as operating loss and tax credit carry forwards. To the extent that current available evidence about the future raises doubt about the realization of a deferred tax asset, a valuation allowance is established. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized as an increase or decrease in income tax expense in the period in which such change is enacted. On December 22, 2017, the United States enacted certain tax reforms through the Tax Cuts and Jobs Act , which changes existing tax laws, most significantly a change in the statutory corporate tax rate from 35% to 21%. As a result of this enactment, the Company incurred additional one-time income tax expense of approximately $1.4 million during the fourth quarter of 2017, primarily due to remeasurement of deferred tax assets and liabilities. Additionally, the Company reviews its uncertain tax positions annually under FASB Interpretation No. 48 (FIN No. 48), “ Accounting for Uncertainty in Income Taxes ,” codified within ASC 740. An uncertain tax position is recognized as a benefit only if it is "more likely than not" that the tax position would be sustained in a tax examination, with a tax examination being presumed to occur. The amount actually recognized is the largest amount of tax benefit that is greater than 50% likely to be recognized on examination. For tax positions not meeting the "more likely than not" test, no tax benefit is recorded. A significant amount of judgment is applied to determine both whether the tax position meets the "more likely than not" test as well as to determine the largest amount of tax benefit that is greater than 50% likely to be recognized. Differences between the position taken by management and that of taxing authorities could result in a reduction of a tax benefit or increase to tax liability, which could adversely affect future income tax expense.
Trust Department Assets	Trust Department Assets Assets held in fiduciary or agency capacities are not included in the consolidated balance sheets since such items are not assets of the Company or its subsidiaries. Fees from trust activities are recorded on a cash basis over the period in which the service is provided. Fees are a function of the market value of assets managed and administered, the volume of transactions, and fees for other services rendered, as set forth in the underlying client agreement with the Trust & Wealth Management Division of First Mid Bank. This revenue recognition involves the use of estimates and assumptions, including components that are calculated based on asset valuations and transaction volumes. Any out of pocket expenses or services not typically covered by the fee schedule for trust activities are charged directly to the trust account on a gross basis as trust revenue is incurred.
Treasury Stock	Treasury Stock
Stock Incentive Awards	Stock Incentive Awards At the Annual Meeting of Stockholders held April 26, 2017, the stockholders approved the 2017 Stock Incentive Plan ("SI Plan"). The SI Plan was implemented to succeed the Company's 2007 Stock Incentive Plan, which had a ten-year term. The SI Plan is intended to provide a means whereby directors, employees, consultants and advisors of the Company and its Subsidiaries may sustain a sense of proprietorship and personal involvement in the continued development and financial success of the Company and its Subsidiaries, thereby advancing the interests of the Company and its stockholders. Accordingly, directors and selected employees, consultants and advisors may be provided the opportunity to acquire shares of Common Stock of the Company on the terms and conditions established in the SI Plan. A maximum of 149,983 shares of common stock may be issued under the SI Plan. The Company awarded 28,700 , 18,391 , and 13,912

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]	The components of accumulated other comprehensive income (loss) included in stockholders’ equity as of December 31, 2018 and 2017 are as follows (in thousands): Unrealized Gain (Loss) on Securities Securities with Other-Than-Temporary Impairment Losses Total December 31, 2018 Net unrealized losses on securities available-for-sale $ (8,951 ) $ — $ (8,951 ) Unamortized losses on securities held-to-maturity transferred from available-for-sale (166 ) — (166 ) Securities with other-than-temporary impairment losses — — — Tax benefit 2,644 — 2,644 Balance at December 31, 2018 $ (6,473 ) $ — $ (6,473 ) December 31, 2017 Net unrealized losses on securities available-for-sale $ (2,619 ) $ — $ (2,619 ) Unamortized losses on securities held-to-maturity transferred from available-for-sale (281 ) — (281 ) Securities with other-than-temporary impairment losses — (345 ) (345 ) Tax benefit 841 100 941 Balance at December 31, 2017 $ (2,059 ) $ (245 ) $ (2,304 )
Schedule of Amounts Reclassified from Accumulated Other Comprehensive Income [Table Text Block]	Amounts reclassified from accumulated other comprehensive income and the affected line items in the statements of income during the years ended December 31, 2018, 2017 and 2016 , were as follows (in thousands): Amounts Reclassified from Other Comprehensive Income Affected Line Item in the Statements of Income 2018 2017 2016 Realized gains on available-for-sale securities $ 901 616 1,192 Securities gains, net (Total reclassified amount before tax) (261 ) (216 ) (465 ) Tax expense Total reclassifications out of accumulated other comprehensive income $ 640 $ 400 $ 727 Net reclassified amount

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2018
Earnings Per Share [Abstract]
Components of Basic and Diluted Net Income per Common Share	The components of basic and diluted net income per common share available to common stockholders for the years ended December 31, 2018, 2017 and 2016 were as follows: 2018 2017 2016 Basic Net Income per Common Share Available to Common Stockholders: Net income $ 36,600,000 $ 26,684,000 $ 21,840,000 Preferred stock dividends — — (825,000 ) Net income available to common stockholders 36,600,000 26,684,000 21,015,000 Weighted average common shares outstanding 14,487,126 12,531,659 10,149,099 Basic earnings per common share $ 2.53 $ 2.13 $ 2.07 Diluted Net Income per Common Share Available to Common Stockholders: Net income available to common stockholders $ 36,600,000 $ 26,684,000 $ 21,015,000 Effect of assumed preferred stock conversion — — 825,000 Net income applicable to diluted earnings per share 36,600,000 26,684,000 21,840,000 Weighted average common shares outstanding 14,487,126 12,531,659 10,149,099 Dilutive potential common shares: Assumed conversion of stock options 209 4,875 3,111 Restricted stock awarded 13,250 — 4,107 Assumed conversion of preferred stock — — 507,393 Dilutive potential common shares 13,459 4,875 514,611 Diluted weighted average common shares outstanding 14,500,585 12,536,534 10,663,710 Diluted earnings per common share $ 2.52 $ 2.13 $ 2.05
Anti-dilutive Securities	There were no shares not considered in computing diluted earnings per share for the years ended December 31, 2018, 2017 and 2016 .

Investment Securities Investmen

Investment Securities Investment Securities (Tables)	12 Months Ended
	Dec. 31, 2018
Investments, Debt and Equity Securities [Abstract]
Available For Sale And Held For Maturity Securities [Table Text Block]	The amortized cost, gross unrealized gains and losses and estimated fair values for available-for-sale and held-to-maturity securities by major security type at December 31, 2018 and December 31, 2017 were as follows (in thousands): December 31, 2018 Amortized Cost Gross Unrealized Gains Gross Unrealized (Losses) Fair Value Available-for-sale: U.S. Treasury securities and obligations of U.S. government corporations & agencies $ 201,380 $ 504 $ (3,235 ) $ 198,649 Obligations of states and political subdivisions 193,195 1,224 (1,840 ) 192,579 Mortgage-backed securities: GSE residential 304,372 486 (6,186 ) 298,672 Other securities 2,278 96 — 2,374 Total available-for-sale $ 701,225 $ 2,310 $ (11,261 ) $ 692,274 Held-to-maturity: U.S. Treasury securities and obligations of U.S. government corporations & agencies $ 69,436 $ — $ (1,527 ) $ 67,909 December 31, 2017 Available-for-sale: U.S. Treasury securities and obligations of U.S. government corporations & agencies $ 115,796 $ 8 $ (2,034 ) $ 113,770 Obligations of states and political subdivisions 165,037 2,254 (1,025 ) 166,266 Mortgage-backed securities: GSE residential 295,778 493 (2,460 ) 293,811 Trust preferred securities 2,893 — (345 ) 2,548 Other securities 2,039 145 — 2,184 Total available-for-sale $ 581,543 $ 2,900 $ (5,864 ) $ 578,579 Held-to-maturity: U.S. Treasury securities and obligations of U.S. government corporations & agencies $ 69,332 $ 103 $ (978 ) $ 68,457 Trust preferred securities at December 31, 2017, is a trust preferred pooled security issued by First Tennessee Financial (“FTN”). The unrealized loss of this security, which had a maturity of twenty years, was primarily due to its long-term nature, a lack of demand or inactive market for the security, and concerns regarding the underlying financial institutions that have issued the trust preferred security. This security was sold during 2018. See the heading “Trust Preferred Securities” below for further information regarding this security.
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Table Text Block]	As described above, the Company’s investments in trust preferred securities experienced fair value deterioration due to credit losses but were not otherwise other-than-temporarily impaired. The following table provides information about those trust preferred securities for which only a credit loss was recognized in income and other losses were recorded in other comprehensive income (loss) for the years ended December 31, 2018, 2017 and 2016 (in thousands). Accumulated Credit Losses as of December 31: 2018 2017 2016 Credit losses on trust preferred securities held: Beginning of period $ 1,111 $ 1,111 $ 1,111 Additions related to OTTI losses not previously recognized — — — Reductions due to sales / (recoveries) (1,111 ) — — Reductions due to change in intent or likelihood of sale — — — Additions related to increases in previously recognized OTTI losses — — — Reductions due to increases in expected cash flows — — — End of period $ — $ 1,111 $ 1,111
Realized Gain (Loss) on Investments [Table Text Block]	Proceeds from sales of investment securities, realized gains and losses and income tax expense were as follows during the years ended December 31, 2018, 2017 and 2016 (in thousands): 2018 2017 2016 Proceeds from sales $ 13,152 $ 159,663 $ 70,757 Gross gains 941 773 1,192 Gross losses (40 ) (157 ) — Income tax expense 261 216 465
Schedule of Unrealized Loss on Investments [Table Text Block]	The following table presents the aging of gross unrealized losses and fair value by investment category as of December 31, 2018 and 2017 (in thousands): Less than 12 months 12 months or more Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses December 31, 2018 Available-for-sale: U.S. Treasury securities and obligations of U.S. government corporations and agencies $ 16,095 $ (148 ) $ 105,549 $ (3,087 ) $ 121,644 $ (3,235 ) Obligations of states and political subdivisions 38,782 (450 ) 42,741 (1,390 ) 81,523 (1,840 ) Mortgage-backed securities: GSE residential 81,435 (1,150 ) 171,321 (5,036 ) 252,756 (6,186 ) Total $ 136,312 $ (1,748 ) $ 319,611 $ (9,513 ) $ 455,923 $ (11,261 ) Held-to-maturity: U.S. Treasury securities and obligations of U.S. government corporations and agencies $ 19,683 $ (147 ) $ 48,226 $ (1,380 ) $ 67,909 $ (1,527 ) December 31, 2017 U.S. Treasury securities and obligations of U.S. government corporations and agencies $ 58,584 $ (540 ) $ 47,972 $ (1,494 ) $ 106,556 $ (2,034 ) Obligations of states and political subdivisions 42,618 (769 ) 9,267 (256 ) 51,885 (1,025 ) Mortgage-backed securities: GSE residential 187,949 (1,942 ) 22,609 (518 ) 210,558 (2,460 ) Trust preferred securities — — 2,548 (345 ) 2,548 (345 ) Total $ 289,151 $ (3,251 ) $ 82,396 $ (2,613 ) $ 371,547 $ (5,864 ) Held-to-maturity: U.S. Treasury securities and obligations of U.S. government corporations and agencies $ 34,101 $ (525 ) $ 14,540 $ (453 ) $ 48,641 $ (978 )
Investments Classified by Contractual Maturity Date [Table Text Block]	The following table indicates the expected maturities of investment securities classified as available-for-sale presented at fair value, and held-to-maturity presented at amortized cost at December 31, 2018 and the weighted average yield for each range of maturities (in thousands): One year or less After 1 through 5 years After 5 through 10 years After ten years Total Available-for-sale: U.S. Treasury securities and obligations of U.S. government corporations and agencies $ 148,656 $ 49,993 $ — $ — $ 198,649 Obligations of state and political subdivisions 23,282 89,930 78,294 1,073 192,579 Mortgage-backed securities: GSE residential 622 160,900 137,150 — 298,672 Other securities — 2,010 — 364 2,374 Total investments $ 172,560 $ 302,833 $ 215,444 $ 1,437 $ 692,274 Weighted average yield 2.57 % 2.83 % 2.93 % 3.10 % 2.80 % Full tax-equivalent yield 2.70 % 3.14 % 3.34 % 4.14 % 3.10 % Held-to-maturity: U.S. Treasury securities and obligations of U.S. government corporations and agencies $ 39,995 $ 29,441 $ — $ — $ 69,436 Weighted average yield 1.76 % 2.08 % — % — % 1.90 % Full tax-equivalent yield 1.76 % 2.08 % — % — % 1.90 % The weighted average yields are calculated on the basis of the amortized cost and effective yields weighted for the scheduled maturity of each security. Tax-equivalent yields have been calculated using a 21% tax rate. With the exception of obligations of the U.S. Treasury and other U.S. government agencies and corporations, there were no investment securities of any single issuer, the book value of which exceeded 10% of stockholders' equity at December 31, 2018 .
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Table Text Block]	Amortized Cost Estimated Fair Value Available-for-sale: Due in one year or less $ 174,049 $ 171,938 Due after one-five years 142,357 141,933 Due after five-ten years 79,095 78,294 Due after ten years 1,352 1,437 396,853 393,602 Mortgage-backed securities: GSE residential 304,372 298,672 Total available-for-sale 701,225 692,274 Held-to-maturity: Due in one year or less 39,995 38,790 Due after one-five years 29,441 29,119 Due after five-ten years — — Due after ten years — — Total held-to-maturity $ 69,436 $ 67,909 Expected maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.

Loans and Allowance for Loan _2

Loans and Allowance for Loan Losses (Tables)	12 Months Ended
	Dec. 31, 2018
Receivables [Abstract]
Summary of Loans	Loans are stated at the principal amount outstanding net of unearned discounts, unearned income and allowance for loan losses. Unearned income includes deferred loan origination fees reduced by loan origination costs and is amortized to interest income over the life of the related loan using methods that approximated the effective interest rate method. Interest on substantially all loans is credited to income based on the principal amount outstanding. A summary of loans at December 31, 2018 and 2017 follows (in thousands): 2018 2017 Construction and land development $ 51,013 $ 107,721 Farm loans 232,409 127,232 1-4 Family residential properties 374,751 294,483 Multifamily residential properties 186,393 61,966 Commercial real estate 911,656 684,639 Loans secured by real estate 1,756,222 1,276,041 Agricultural loans 136,125 86,602 Commercial and industrial loans 559,120 445,378 Consumer loans 92,744 30,070 All other loans 113,925 108,023 Gross loans 2,658,136 1,946,114 Less: Loans held for sale 1,508 1,025 2,656,628 1,945,089 Less: Net deferred loan fees, premiums and discounts 13,617 6,613 Allowance for loan losses 26,189 19,977 Net loans $ 2,616,822 $ 1,918,499
Allowance for Loan Losses and Recorded Investment in Loans	The following tables present the balance in the allowance for loan losses and the recorded investment in loans based on portfolio segment and impairment method as of December 31, 2018, 2017 and 2016 (in thousands): Commercial/ Commercial Real Estate Agricultural/ Agricultural Real Estate Residential Real Estate Consumer Unallocated Total December 31, 2018 Allowance for loan losses: Balance, beginning of year $ 16,546 $ 1,742 $ 886 $ 803 $ — $ 19,977 Provision charged to expense 6,070 548 1,447 602 — 8,667 Losses charged off (1,227 ) (93 ) (886 ) (787 ) — (2,993 ) Recoveries 167 — 57 314 — 538 Balance, end of period $ 21,556 $ 2,197 $ 1,504 $ 932 $ — $ 26,189 Ending balance: Individually evaluated for impairment $ 1,816 $ — $ 225 $ 3 $ — $ 2,044 Collectively evaluated for impairment $ 18,514 $ 2,197 $ 1,270 $ 929 $ — $ 22,910 Loans acquired with deteriorated credit quality $ 1,226 $ — $ 9 $ — $ — $ 1,235 Loans: Ending balance $ 1,784,741 $ 367,211 $ 392,526 $ 100,041 $ — $ 2,644,519 Ending Balance: Individually evaluated for impairment $ 14,422 $ 32 $ 2,360 $ 166 $ — $ 16,980 Collectively evaluated for impairment $ 1,756,908 $ 367,175 $ 387,961 $ 99,872 $ — $ 2,611,916 Loans acquired with deteriorated credit quality $ 13,411 $ 4 $ 2,205 $ 3 $ — $ 15,623 Commercial/ Commercial Real Estate Agricultural/ Agricultural Real Estate Residential Real Estate Consumer Unallocated Total December 31, 2017 Allowance for loan losses: Balance, beginning of year $ 12,901 $ 2,249 $ 874 $ 693 $ 36 $ 16,753 Provision charged to expense 6,884 153 100 361 (36 ) 7,462 Losses charged off (3,795 ) (662 ) (217 ) (521 ) — (5,195 ) Recoveries 556 2 129 270 — 957 Balance, end of period $ 16,546 $ 1,742 $ 886 $ 803 $ — $ 19,977 Ending balance: Individually evaluated for impairment $ 586 $ 2 $ 25 $ 1 $ — $ 614 Collectively evaluated for impairment $ 15,951 $ 1,740 $ 861 $ 802 $ — $ 19,354 Loans acquired with deteriorated credit quality 9 0 0 0 0 9 Loans: Ending balance $ 1,371,787 $ 213,521 $ 315,123 $ 39,070 $ — $ 1,939,501 Ending balance: Individually evaluated for impairment $ 11,372 $ 488 $ 1,026 $ 200 $ — $ 13,086 Collectively evaluated for impairment $ 1,360,156 $ 213,033 $ 314,097 $ 38,870 $ — $ 1,926,156 Loans acquired with deteriorated credit quality $ 259 $ — $ — $ — $ — $ 259 December 31, 2016 Allowance for loan losses: Balance, beginning of year $ 11,379 $ 1,337 $ 994 $ 642 $ 224 $ 14,576 Provision charged to expense 1,467 933 113 501 (188 ) 2,826 Losses charged off (747 ) (30 ) (234 ) (664 ) — (1,675 ) Recoveries 802 9 1 214 — 1,026 Balance, end of year $ 12,901 $ 2,249 $ 874 $ 693 $ 36 $ 16,753 Ending balance: Individually evaluated for impairment $ 192 $ 660 $ 6 $ — $ — $ 858 Collectively evaluated for impairment $ 12,695 $ 1,589 $ 868 $ 693 $ 36 $ 15,881 Loans acquired with deteriorated credit quality 14 0 0 0 0 14 Loans: Ending balance $ 1,204,799 $ 212,513 $ 366,823 $ 41,857 $ — $ 1,825,992 Ending balance: Individually evaluated for impairment $ 1,956 $ 1,345 $ 1,752 $ 213 $ — $ 5,266 Collectively evaluated for impairment $ 1,199,003 $ 211,168 $ 360,825 $ 41,644 $ — $ 1,812,640 Loans acquired with deteriorated credit quality $ 3,840 $ — $ 4,246 $ — $ — $ 8,086
Credit Risk Profile of the Company's Loan Portfolio	Loans not meeting the criteria above that are analyzed individually as part of the above described process are considered pass rated loans. The following tables present the credit risk profile of the Company’s loan portfolio based on rating category and payment activity as of December 31, 2018 and 2017 (in thousands): Construction & Land Development Farm Loans 1-4 Family Residential Properties Multifamily Residential Properties 2018 2017 2018 2017 2018 2017 2018 2017 Pass $ 49,794 $ 107,140 $ 221,047 $ 120,767 $ 352,583 $ 282,441 $ 163,845 $ 60,954 Special Mention 471 454 7,805 4,829 5,526 2,654 8,144 476 Substandard 354 — 2,848 1,587 15,409 8,572 12,062 368 Doubtful — — — — — — — — Total $ 50,619 $ 107,594 $ 231,700 $ 127,183 $ 373,518 $ 293,667 $ 184,051 $ 61,798 Commercial Real Estate (Nonfarm/Nonresidential) Agricultural Loans Commercial & Industrial Loans Consumer Loans 2018 2017 2018 2017 2018 2017 2018 2017 Pass $ 861,086 $ 647,208 $ 127,863 $ 83,469 $ 535,186 $ 425,846 $ 90,133 $ 29,375 Special Mention 16,035 16,941 7,581 2,304 9,967 11,492 177 5 Substandard 29,729 17,608 433 858 11,858 6,925 1,206 369 Doubtful — — — — — — — — Total $ 906,850 $ 681,757 $ 135,877 $ 86,631 $ 557,011 $ 444,263 $ 91,516 $ 29,749 All Other Loans Total Loans 2018 2017 2018 2017 Pass $ 110,352 $ 103,339 $ 2,511,889 $ 1,860,539 Special Mention 3,010 3,520 58,716 42,675 Substandard 15 — 73,914 36,287 Doubtful — — — — Total $ 113,377 $ 106,859 $ 2,644,519 $ 1,939,501
Loan Portfolio Aging Analysis	The following table presents the Company’s loan portfolio aging analysis at December 31, 2018 and 2017 (in thousands): 30-59 days Past Due 60-89 days Past Due 90 Days or More Past Due Total Past Due Current Total Loans Receivable Total Loans > 90 days & Accruing December 31, 2018 Construction and land development $ 460 $ 43 $ — $ 503 $ 50,116 $ 50,619 $ — Farm loans — 804 — 804 230,896 231,700 — 1-4 Family residential properties 3,347 3,051 4,080 10,478 363,040 373,518 — Multifamily residential properties 1,149 — 1,955 3,104 180,947 184,051 — Commercial real estate 1,349 89 4,058 5,496 901,354 906,850 — Loans secured by real estate 6,305 3,987 10,093 20,385 1,726,353 1,746,738 — Agricultural loans 63 — 20 83 135,794 135,877 — Commercial and industrial loans 1,417 10 3,902 5,329 551,682 557,011 — Consumer loans 888 356 299 1,543 89,973 91,516 — All other loans 697 — — 697 112,680 113,377 — Total loans $ 9,370 $ 4,353 $ 14,314 $ 28,037 $ 2,616,482 $ 2,644,519 $ — December 31, 2017 Construction and land development $ 26 $ 48 $ — $ 74 $ 107,520 $ 107,594 $ — Farm loans — — 396 396 126,787 127,183 — 1-4 Family residential properties 3,023 538 1,767 5,328 288,339 293,667 — Multifamily residential properties — — — — 61,798 61,798 — Commercial real estate 90 38 3,566 3,694 678,063 681,757 — Loans secured by real estate 3,139 624 5,729 9,492 1,262,507 1,271,999 — Agricultural loans — 32 158 190 86,441 86,631 — Commercial and industrial loans 192 3 770 965 443,298 444,263 — Consumer loans 178 67 27 272 29,477 29,749 — All other loans — — — — 106,859 106,859 — Total loans $ 3,509 $ 726 $ 6,684 $ 10,919 $ 1,928,582 $ 1,939,501 $ —
Impaired Loans	The following tables present impaired loans as of December 31, 2018 and 2017 (in thousands): 2018 2017 Recorded Balance Unpaid Principal Balance Specific Allowance Recorded Balance Unpaid Principal Balance Specific Allowance Loans with a specific allowance: Construction and land development $ 2,559 $ 2,559 $ 14 $ — $ — $ — Farm loans — — — 276 276 — 1-4 Family residential properties 4,565 4,952 234 1,026 1,347 25 Multifamily residential properties 4,465 4,465 — 313 313 — Commercial real estate 12,517 12,804 1,553 5,544 5,565 531 Loans secured by real estate 24,106 24,780 1,801 7,159 7,501 556 Agricultural loans 36 504 — 212 1,009 2 Commercial and industrial loans 8,292 8,723 1,475 5,774 6,037 64 Consumer loans 169 171 3 200 200 1 All other loans — — — — — — Total loans $ 32,603 $ 34,178 $ 3,279 $ 13,345 $ 14,747 $ 623 Loans without a specific allowance: Construction and land development $ 48 $ 48 $ — $ — $ — $ — Farm loans 309 309 — 15 15 — 1-4 Family residential properties 3,680 4,769 — 2,239 2,664 — Multifamily residential properties 7,597 7,597 — 55 55 — Commercial real estate 983 1,201 — 303 368 — Loans secured by real estate 12,617 13,924 — 2,612 3,102 — Agricultural loans 631 163 — 545 — — Commercial and industrial loans 1,660 2,027 — 909 1,249 — Consumer loans 471 1,006 — 102 119 — All other loans 6 6 — — — — Total loans $ 15,385 $ 17,126 $ — $ 4,168 $ 4,470 $ — Total loans: Construction and land development $ 2,607 $ 2,607 $ 14 $ — $ — $ — Farm loans 309 309 — 291 291 — 1-4 Family residential properties 8,245 9,721 234 3,265 4,011 25 Multifamily residential properties 12,062 12,062 — 368 368 — Commercial real estate 13,500 14,005 1,553 5,847 5,933 531 Loans secured by real estate 36,723 38,704 1,801 9,771 10,603 556 Agricultural loans 667 667 — 757 1,009 2 Commercial and industrial loans 9,952 10,750 1,475 6,683 7,286 64 Consumer loans 640 1,177 3 302 319 1 All other loans 6 6 — — — — Total loans $ 47,988 $ 51,304 $ 3,279 $ 17,513 $ 19,217 $ 623
Impaired loans by portfolio class	The following tables present average recorded investment and interest income recognized on impaired loans for the years ended December 31, 2018, 2017 and 2016 (in thousands): 2018 2017 2016 Average Investment in Impaired Loans Interest Income Recognized Average Investment in Impaired Loans Interest Income Recognized Average Investment in Impaired Loans Interest Income Recognized Construction and land development $ 2,558 $ 37 $ — $ — $ 229 $ — Farm loans 415 — 293 — 207 — 1-4 Family residential properties 6,297 144 3,267 29 2,988 22 Multifamily residential properties 9,666 137 377 1 3,824 55 Commercial real estate 9,818 271 5,457 13 6,675 36 Loans secured by real estate 28,754 589 9,394 43 13,923 113 Agricultural loans 727 23 878 — 1,394 — Commercial and industrial loans 9,003 6 6,586 8 1,485 4 Consumer loans 131 1 325 — 557 2 All other loans 3 — — — — — Total loans $ 38,618 $ 619 $ 17,183 $ 51 $ 17,359 $ 119 The amount of interest income recognized by the Company within the periods stated above was due to loans modified in a troubled debt restructuring that remained on accrual status. The balance of loans modified in a troubled debt restructuring included in the impaired loans stated above that were still accruing was $7,237,000 of multifamily residential properties, $1,945,000 of construction & land development, $1,769,000 of 1-4 Family residential properties, $676,000 of commercial real estate, and $962,000 of commercial and industrial loans at December 31, 2018 and $578,000 of 1-4 Family residential properties, $251,000 of commercial real estate loans, and $25,000 of commercial and industrial loans at December 31, 2017 . For the years ended December 31, 2018, 2017 and 2016 , the amount of interest income recognized using a cash-basis method of accounting during the period that the loans were impaired was not material.
Nonaccrual Loans	The following table presents the Company’s recorded balance of nonaccrual loans at December 31, 2018 and December 31, 2017 (in thousands). This table excludes purchased credit-impaired loans and performing troubled debt restructurings. 2018 2017 Construction and land development $ 377 $ — Farm loans 309 291 1-4 Family residential properties 5,762 2,687 Multifamily residential properties 2,105 368 Commercial real estate 8,457 5,596 Loans secured by real estate 17,010 8,942 Agricultural loans 667 757 Commercial and industrial loans 8,990 6,658 Consumer loans 625 302 All other loans 6 — Total loans $ 27,298 $ 16,659
Schedule of Acquired Receivables With Credit Deterioration [Table Text Block]	The Company acquired certain loans considered to be credit-impaired in its business combination with First Clover Leaf during the third quarter of 2016, First Bank & Trust during the second quarter of 2018 and Soy Capital during the fourth quarter of 2018. At acquisition, these loans evidenced deterioration of credit quality since origination and it was probable, at acquisition, that all contractually required payments would not be collected. The carrying amount of these loans is included in the consolidated balance sheet amounts for Loans. The Company had no PCI loans prior to the First Clover Leaf acquisition. The amount of these loans at December 31, 2018 and 2017 are as follows (in thousands): December 31, 2018 December 31, 2017 Construction and land development $ 2,872 $ — 1-4 Family residential properties $ 2,206 $ — Multifamily residential properties 3,891 — Commercial real estate 6,946 251 Loans secured by real estate 15,915 251 Agricultural loans 4 — Commercial and industrial loans 15 8 Consumer loans 3 — Carrying amount 15,937 259 Allowance for loan losses (1,235 ) (9 ) Carrying amount, net of allowance $ 14,702 $ 250
Acquired Receivables With Credit Deterioration, Values at Acquisition [Table Text Block]	The PCI loans acquired during the twelve months ended December 31, 2018 for which it was probable that all contractually required payments would not be collected were as follows (in thousands): First Bank Soy Capital Contractually required payments $ 20,357 $ 3,282 Non-accretable difference (4,231 ) (688 ) Cash flows expected to be collected at acquisition 16,126 2,594 Accretable yield — — Fair value of acquired loans at acquisition $ 16,126 $ 2,594
Recorded Balance of Troubled Debt Restructurings	The following table presents the Company’s recorded balance of troubled debt restructurings at December 31, 2018 and 2017 (in thousands). Troubled debt restructurings: 2018 2017 Construction and land development $ — $ — 1-4 Family residential properties 2,472 874 Multifamily residential properties — — Commercial real estate 1,706 1,376 Loans secured by real estate 4,178 2,250 Agricultural loans 499 757 Commercial and industrial loans 5,112 5,690 Consumer Loans 167 201 Total $ 9,956 $ 8,898 Performing troubled debt restructurings: Construction and Land Development $ — $ — 1-4 Family residential properties 1,769 578 Multifamily residential properties — — Commercial real estate 676 251 Loans secured by real estate 2,445 829 Commercial and industrial loans — 25 Consumer Loans 6 — Total $ 2,451 $ 854

Premises and Equipment, Net (Ta

Premises and Equipment, Net (Tables)	12 Months Ended
	Dec. 31, 2018
Property, Plant and Equipment [Abstract]
Premises and equipment	Premises and equipment at December 31, 2018 and 2017 consisted of (in thousands): 2018 2017 Land $ 14,734 $ 9,933 Buildings and improvements 52,129 37,229 Furniture and equipment 19,718 16,145 Leasehold improvements 3,580 4,109 Construction in progress 321 29 Subtotal 90,482 67,445 Accumulated depreciation and amortization 31,365 29,179 Total $ 59,117 $ 38,266

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Intangible Assets and Goodwill [Table Text Block]	The Company has goodwill from business combinations, intangible assets from branch acquisitions, identifiable intangible assets assigned to core deposit relationships and customer lists of business lines acquired. The following table presents gross carrying amount and accumulated amortization by major intangible asset class as of December 31, 2018 and 2017 (in thousands): 2018 2017 Gross Carrying Value Accumulated Amortization Gross Carrying Value Accumulated Amortization Goodwill not subject to amortization $ 109,037 $ 3,760 $ 63,910 $ 3,760 Intangibles from branch acquisition 3,015 3,015 3,015 3,015 Core deposit intangibles 32,355 14,017 19,862 11,473 Customer list intangibles 16,029 2,648 3,731 2,285 $ 160,436 $ 23,440 $ 90,518 $ 20,533
Reconciliation of purchase price to goodwill recorded [Table Text Block]	The following table provides a reconciliation of the purchase price paid for First Bank and the amount of goodwill recorded (in thousands): Unallocated purchase price $ 26,946 Less purchase accounting adjustments: Fair value of securities 320 Fair value of loans 3,463 Fair value of OREO 12 Fair value of mortgage servicing rights (1,097 ) Fair value of premises and equipment 689 Fair value of time deposits 1,301 Fair value of FHLB advances (328 ) Fair value of subordinated debentures (1,451 ) Core deposit intangible (5,224 ) Other assets and other liabilities 1,860 (455 ) Resulting goodwill from acquisition $ 26,491
Intangible Assets, Mortgage Servicing Rights [Table Text Block]	As part of the acquisition of First Bank acquisition, the Company acquired mortgage servicing rights valued at $1,558,000 . The following table summarizes the activity pertaining to the mortgage servicing rights included in intangible assets as of December 31, 2018 and 2017 (in thousands): December 31, 2018 December 31, 2017 Beginning Balance 844 985 Acquired Balance 1,558 — Mortgage Servicing rights capitalized 7 — Mortgage Servicing rights amortized (308 ) (141 ) Ending Balance $ 2,101 $ 844
Schedule of Intangible Assets Amortization Expense [Table Text Block]	Total amortization expense for the years ended December 31, 2018, 2017 and 2016 was as follows (in thousands): 2018 2017 2016 Core deposit intangibles 2,544 1,829 1,628 Customer list intangibles 363 183 183 Mortgage Servicing Rights 308 141 98 $ 3,215 $ 2,153 $ 1,909
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]	stimated amortization expense for each of the five succeeding years is shown in the table below (in thousands): For year ended 12/31/19 $ 5,355 For year ended 12/31/20 4,644 For year ended 12/31/21 3,996 For year ended 12/31/22 3,630 For year ended 12/31/23 3,318

Deposits (Tables)

Deposits (Tables)	12 Months Ended
	Dec. 31, 2018
Deposits [Abstract]
Schedule of Deposits [Table Text Block]	As of December 31, 2018 and 2017 , deposits consisted of the following (in thousands): 2018 2017 Demand deposits: Non-interest bearing $ 575,784 $ 480,283 Interest-bearing 903,426 700,376 Savings 432,319 359,065 Money market 485,388 390,880 Time deposits 591,769 344,035 Total deposits $ 2,988,686 $ 2,274,639
Components of deposit interest expense [Table Text Block]	Total interest expense on deposits for the years ended December 31, 2018, 2017 and 2016 was as follows (in thousands): 2018 2017 2016 Interest-bearing demand $ 1,158 $ 588 $ 274 Savings 579 486 445 Money market 2,135 1,224 719 Time deposits 4,699 1,697 1,275 Total $ 8,571 $ 3,995 $ 2,713
Aggregate Time Deposits more than 100,000 and related interest expense [Table Text Block]	As of December 31, 2018, 2017 and 2016 , the aggregate amount of time deposits in denominations of more than $250,000 was as follows (in thousands): 2018 2017 2016 Time deposit balances in denominations of more than $250,000 $ 87,517 $ 52,598 $ 55,768
Maturities of Time Deposits [Table Text Block]	The following table shows the amount of maturities for all time deposits as of December 31, 2018 (in thousands): Less than 1 year $ 318,879 1 year to 2 years 185,814 2 years to 3 years 48,953 3 years to 4 years 21,714 4 years to 5 years 14,976 Over 5 years 1,433 Total $ 591,769

Borrowings (Tables)

Borrowings (Tables)	12 Months Ended
	Dec. 31, 2018
Debt Disclosure [Abstract]
Borrowings	As of December 31, 2018 and 2017 borrowings consisted of the following (in thousands): 2018 2017 Securities sold under agreements to repurchase $ 192,330 $ 155,388 Federal Home Loan Bank (FHLB) Fixed-term advances 119,745 60,038 Subordinated debentures 29,000 24,000 Other borrowings: Due after one year 7,724 10,313 Total $ 348,799 $ 249,739
Aggregate annual maturities of long-term borrowings	Aggregate annual maturities of FHLB advances and subordinated debentures (excluding unamortized discounts and premiums) at December 31, 2018 are (in thousands): FHLB Subordinated Debentures 2019 $ 56,000 $ — 2020 39,000 — 2021 15,000 — 2022 5,000 — 2023 5,000 — Thereafter — 30,930 $ 120,000 $ 30,930 Unamortized premium (discount) $ (255 ) $ (1,930 ) $ 119,745 $ 29,000
Securities underlying the repurchase agreements	(in thousands) 2018 2017 2016 Securities sold under agreements to repurchase: Maximum outstanding at any month-end $ 192,330 $ 163,626 $ 185,763 Average amount outstanding for the year 140,622 144,674 129,734

Regulatory Capital (Tables)

Regulatory Capital (Tables)	12 Months Ended
	Dec. 31, 2018
Regulatory Capital [Abstract]
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block]	s of December 31, 2018 and 2017 , the most recent notification from the primary regulators categorized First Mid Bank and Soy Capital Bank (prior to its merger into First Mid Bank) as well capitalized under the regulatory framework for prompt corrective action. To be categorized as well capitalized, minimum total risk-based capital, Tier 1 risk-based capital, Common Equity Tier 1 risk-based capital, and Tier 1 leverage ratios must be maintained as set forth in the table below. At December 31, 2018 , there were no conditions or events since the most recent notification that management believes have changed this categorization. Actual Required Minimum For Capital Adequacy Purposes with Capital Buffer To Be Well-Capitalized Under Prompt Corrective Action Provisions Amount (in thousands) Ratio Amount (in thousands) Ratio Amount (in thousands) Ratio December 31, 2018 Total Capital (to risk-weighted assets) Company $ 412,879 13.63 % $ 299,148 > 9.875% N/A N/A First Mid Bank 350,361 12.85 % 269,171 > 9.875 $ 272,578 > 10.00% Soy Capital Bank 45,387 14.33 % 31,283 > 9.875 $ 31,679 > 10.00% Tier 1 Capital (to risk-weighted assets) Company 386,690 12.76 % 238,561 > 7.875 N/A N/A First Mid Bank 324,172 11.89 % 214,655 > 7.875 218,063 > 8.00 Soy Capital Bank 45,387 14.33 % 24,947 > 7.875 25,343 > 8.00 Common Equity Tier 1 Capital (to risk-weighted assets) Company 357,690 11.81 % 193,121 > 6.375 N/A N/A First Mid Bank 324,172 11.89 % 173,769 > 6.375 177,176 > 6.50 Soy Capital Bank 45,387 14.33 % 20,195 > 6.375 20,591 > 6.50 Tier 1 Capital (to average assets) Company 386,690 11.15 % 138,765 > 4.00 N/A N/A First Mid Bank 324,172 9.92 % 130,716 > 4.00 163,396 > 5.00 Soy Capital Bank 45,387 11.12 % 16,322 > 4.00 20,403 > 5.00 December 31, 2017 Total Capital (to risk-weighted assets) Company $ 290,843 12.70 % $ 211,848 > 9.25% N/A N/A First Mid Bank 282,621 12.39 % 211,064 > 9.25 $ 228,177 > 10.00% Tier 1 Capital (to risk-weighted assets) Company 270,866 11.83 % 166,043 > 7.25 N/A N/A First Mid Bank 262,644 11.51 % 165,428 > 7.25 182,542 > 8.00 Common Equity Tier 1 Capital (to risk-weighted assets) Company 246,866 10.78 % 131,690 > 5.75 N/A N/A First Mid Bank 262,644 11.51 % 131,202 > 5.75 148,315 > 6.50 Tier 1 Capital (to average assets) Company 270,866 9.91 % 109,381 > 4.00 N/A N/A First Mid Bank 262,644 9.63 % 109,113 > 4.00 136,392 > 5.00 The Company's risk-weighted assets, capital and capital ratios for December 31, 2018 are computed in accordance with Basel III capital rules which were effective January 1, 2015. Prior periods are computed following previous rules. See heading "Basel III" in the Overview section of this report for a more detailed description of Basel III rules. As of December 31, 2018 and 2017 , the Company, First Mid Bank, and Soy Capital Bank had capital ratios above the required minimums for regulatory capital adequacy, and First Mid Bank and Soy Capital Bank had capital ratios that qualified it for treatment as well-capitalized under the regulatory framework for prompt corrective action with respect to banks.

Disclosures of Fair Values of_2

Disclosures of Fair Values of Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Assets Measured at Fair Value on Recurring Basis	The following table presents the Company’s assets that are measured at fair value on a recurring basis and the level within the fair value hierarchy in which the fair value measurements fall as of December 31, 2018 and 2017 (in thousands): Fair Value Measurements Using: Fair Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) December 31, 2018 Available-for-sale securities: U.S. Treasury securities and obligations of U.S. government corporations and agencies $ 198,649 $ — $ 198,649 $ — Obligations of states and political subdivisions 192,579 — 191,612 967 Mortgage-backed securities 298,672 — 298,672 — Other securities 2,374 364 2,010 — Total available-for-sale securities $ 692,274 $ 364 $ 690,943 $ 967 December 31, 2017 Available-for-sale securities: U.S. Treasury securities and obligations of U.S. government corporations and agencies $ 113,770 $ — $ 113,770 $ — Obligations of states and political subdivisions 166,266 — 166,266 — Mortgage-backed securities 293,811 — 293,811 — Trust preferred securities 2,548 — — 2,548 Other securities 2,184 172 2,012 — Total available-for-sale securities $ 578,579 $ 172 $ 575,859 $ 2,548
Fair Value of Assets Measured on a Recurring Basis Using Significant Unobservable Inputs	The change in fair value of assets measured on a recurring basis using significant unobservable inputs (Level 3) for the years ended December 31, 2018 and 2017 is summarized as follows (in thousands): Obligations of State and Political Subdivisions Trust Preferred Securities December 31, 2018 December 31, 2017 December 31, 2018 December 31, 2017 Beginning balance $ — $ — $ 2,548 $ 1,652 Transfers into Level 3 967 — — — Transfers out of Level 3 — — — — Total gains or losses Included in net income — — — — Included in other comprehensive income (loss) — — 18 1,053 Purchases, issuances, sales and settlements — Purchases — — — — Issuances — — — — Sales — — (2,522 ) — Settlements — — (44 ) (157 ) Ending balance $ 967 $ — $ — $ 2,548 Total gains or losses for the period included in net income attributable to the change in unrealized gains or losses related to assets and liabilities still held at the reporting date $ — $ — $ — $ —
Assets Measured at Fair Value on a Nonrecurring Basis	The following table presents the fair value measurement of assets measured at fair value on a nonrecurring basis and the level within the fair value hierarchy in which the fair value measurements fall at December 31, 2018 and 2017 (in thousands): Fair Value Measurements Using Fair Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) December 31, 2018 Impaired loans (collateral dependent) $ 16,437 $ — $ — $ 16,437 Foreclosed assets held for sale 836 — — 836 December 31, 2017 Impaired loans (collateral dependent) $ 3,053 $ — $ — $ 3,053 Foreclosed assets held for sale 91 — — 91
Significant Assumptions Used in Valuation of Level 3 Financial Instruments	The following table presents quantitative information about unobservable inputs used in recurring and nonrecurring Level 3 fair value measurements other than goodwill at December 31, 2018 . Fair Value (in thousands) Valuation Technique Unobservable Inputs Range (Weighted Average) Impaired loans (collateral dependent) 16,437 Third party valuations Discount to reflect realizable value 0 % - 40% ( 20 % ) Foreclosed assets held for sale 836 Third party valuations Discount to reflect realizable value less estimated selling costs 0 % - 40% ( 35 % )
Carrying Amounts and Estimated Fair Values of Financial Instruments Not Carried at Fair Value	The following tables present estimated fair values of the Company’s financial instruments at December 31, 2018 and 2017 in accordance with FAS 107-1 and APB 28-1, codified with ASC 820 (in thousands): Carrying Amount Fair Value Level 1 Level 2 Level 3 December 31, 2018 Financial Assets Cash and due from banks $ 140,735 $ 140,735 $ 140,735 $ — $ — Federal funds sold 665 665 665 — — Certificates of deposit investments 7,569 7,569 — 7,569 — Available-for-sale securities 692,274 692,274 364 690,943 967 Held-to-maturity securities 69,436 67,909 — 67,909 — Loans held for sale 1,508 1,508 — 1,508 — Loans net of allowance for loan losses 2,616,822 2,541,037 — — 2,541,037 Interest receivable 16,881 16,881 — 16,881 — Federal Reserve Bank stock 7,390 7,390 — 7,390 — Federal Home Loan Bank stock 3,095 3,095 — 3,095 — Financial Liabilities Deposits 2,988,686 2,991,177 — 2,396,917 594,260 Securities sold under agreements to repurchase 192,330 192,179 — 192,179 — Interest payable 1,758 1,758 — 1,758 — Federal Home Loan Bank borrowings 119,745 119,704 — 119,704 — Other borrowings 7,724 7,724 — 7,724 — Junior subordinated debentures 29,000 24,418 — 24,418 — Carrying Amount Fair Value Level 1 Level 2 Level 3 December 31, 2017 Financial Assets Cash and due from banks $ 88,388 $ 88,388 $ 88,388 $ — $ — Federal funds sold 491 491 491 — — Certificates of deposit investments 1,685 1,692 — 1,692 — Available-for-sale securities 578,579 578,579 172 575,859 2,548 Held-to-maturity securities 69,332 68,457 — 68,457 — Loans held for sale 1,025 1,025 — 1,025 — Loans net of allowance for loan losses 1,918,499 1,899,678 — — 1,899,678 Interest receivable 10,832 10,832 — 10,832 — Federal Reserve Bank stock 5,160 5,160 — 5,160 — Federal Home Loan Bank stock 2,407 2,407 — 2,407 — Financial Liabilities Deposits 2,274,639 2,272,868 — 1,930,604 342,264 Securities sold under agreements to repurchase 155,388 155,394 — 155,394 — Interest payable 602 602 — 602 — Federal Home Loan Bank borrowings 60,038 59,968 — 59,968 — Other borrowings 10,313 10,313 — 10,313 — Junior subordinated debentures 24,000 18,050 — 18,050 —

Stock Incentive Plan (Tables)

Stock Incentive Plan (Tables)	12 Months Ended
	Dec. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Compensation cost, net of forfeitures, related to stock-based compensation	The following table summarizes the compensation cost, net of forfeitures, related to stock-based compensation for the years ended December 31, 2018, 2017 and 2016 (in thousands): 2018 2017 2016 Stock and stock unit awards: Pre-tax compensation expense $ 314 $ 954 $ 384 Income tax benefit (66 ) (334 ) (134 ) Total share-based compensation expense, net of income taxes $ 248 $ 620 $ 250
Summary of option activity	A summary of option activity under the SI Plan and the 1997 Stock Incentive Plan as of December 31, 2018, 2017 and 2016 , and changes during the years then ended is presented below: 2018 Shares Weighted-Average Weighted-Average Aggregate Outstanding, beginning of year 10,500 $23.00 Granted 0 0.00 Exercised (10,500) 23.00 Forfeited or expired 0 0.00 Outstanding, end of year 0 $0.00 0.00 $ — Exercisable, end of year 0 $0.00 0.00 $ — The total intrinsic value of options exercised during 2018 was $176,000 . As of December 31, 2018 there were no outstanding options. 2017 Shares Weighted-Average Weighted-Average Aggregate Outstanding, beginning of year 40,500 $24.65 Granted 0 0.00 Exercised (27,500) 25.42 Forfeited or expired (2,500) 23.00 Outstanding, end of year 10,500 $23.00 0.96 $ 163,170 Exercisable, end of year 10,500 $23.00 0.96 $ 163,170 The total intrinsic value of options exercised during 2017 was $259,000 . There were no stock options for shares of common stock not considered in computing the aggregate intrinsic value of outstanding shares and exercisable shares for 2017 because they were anti-dilutive. 2016 Shares Weighted-Average Weighted-Average Aggregate Outstanding, beginning of year 45,500 $24.67 Granted 0 0.00 Exercised (2,500) 24.86 Forfeited or expired (2,500) 24.86 Outstanding, end of year 40,500 $24.65 1.42 $ 378,850 Exercisable, end of year 40,500 $24.65 1.42 $ 378,850
Schedule of Unvested Restricted Stock and Restricted Stock Units Roll Forward [Table Text Block]	The following table summarizes non-vested stock and stock unit activity for the years ended December 31, 2018, 2017 and 2016 : 2018 2017 2016 Shares Weighted-avg Grant-date Fair Value Shares Weighted-avg Grant-date Fair Value Shares Weighted-avg Grant-date Fair Value Nonvested, beginning of year 0 $0.00 32,338 $22.64 30,169 $20.87 Granted 28,700 38.92 18,391 30.65 13,912 26.09 Vested (4,420) 38.92 (50,729) 25.54 (11,743) 22.18 Forfeited 0 0.00 0 0.00 0 0.00 Nonvested, end of year 24,280 $38.92 0 $0.00 32,338 $22.64 Fair value of shares vested $ 172,026 $ 260,483 $ 260,483

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Components of federal and state income tax expense (benefit)	The components of federal and state income tax expense for the years ended December 31, 2018, 2017 and 2016 were as follows (in thousands): 2018 2017 2016 Current Federal $ 4,841 $ 9,825 $ 11,375 State 2,781 2,719 2,953 Total Current 7,622 12,544 14,328 Deferred Federal 2,818 2,047 (1,940 ) State 1,465 451 (448 ) Total Deferred 4,283 2,498 (2,388 ) Total $ 11,905 $ 15,042 $ 11,940
Effective income tax rate reconciliation	The principal reasons for the difference are as follows (in thousands): 2018 2017 2016 Expected income taxes $ 10,186 $ 14,604 $ 11,823 Effects of: Tax-exempt income from bank owned life insurance (283 ) (573 ) (235 ) Other tax exempt income (1,598 ) (2,223 ) (1,577 ) Nondeductible interest expense 43 28 21 State taxes, net of federal taxes 3,354 2,062 1,628 Other items 218 (266 ) 280 Adjustment of deferred tax assets and liabilities for enacted change in tax laws — 1,410 — Effect of marginal tax rate (15 ) — — Total $ 11,905 $ 15,042 $ 11,940
Deferred tax assets and deferred tax liabilities	The tax effects of the temporary differences that gave rise to significant portions of the deferred tax assets and deferred tax liabilities at December 31, 2018 and 2017 are presented below (in thousands): 2018 2017 Deferred tax assets: Allowance for loan losses $ 7,251 $ 5,694 Available-for-sale investment securities 2,644 941 Deferred compensation 3,593 749 Supplemental retirement 152 170 Core deposit premium and other intangible assets 657 664 Pass thru activities — 126 Other-than-temporary impairment on securities — 317 Stock compensation expense 43 — Purchase accounting — 475 Acquisition costs 190 210 Other 977 596 Total gross deferred tax assets 15,507 9,942 Deferred tax liabilities: Deferred loan costs 126 26 Intangibles amortization 4,135 3,685 Prepaid expenses 297 232 FHLB stock dividend 232 158 Depreciation 2,149 1,207 Deferred revenue 81 58 Purchase accounting 6,066 — Accumulated accretion 199 112 Mortgage servicing rights 578 240 Total gross deferred tax liabilities 13,863 5,718 Net deferred tax assets $ 1,644 $ 4,224

Commitments and Contingent Li_2

Commitments and Contingent Liabilities (Tables)	12 Months Ended
	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Off-balance sheet financial instruments whose contract amounts represent credit risk	The off-balance sheet financial instruments whose contract amounts represent credit risk at December 31, 2018 and 2017 were as follows (in thousands): 2018 2017 Unused commitments and lines of credit: Commercial real estate $ 102,015 $ 73,268 Commercial operating 298,657 223,960 Home equity 43,026 38,318 Other 110,226 69,333 Total $ 553,924 $ 404,879 Standby letters of credit $ 10,183 $ 10,626

Related Party Transactions (Tab

Related Party Transactions (Tables)	12 Months Ended
	Dec. 31, 2018
Related Party Transactions [Abstract]
Related party transactions	Activity during 2018 and 2017 was as follows (in thousands): 2018 2017 Beginning balance $ 76,835 $ 54,502 New loans 24,957 29,725 Loan repayments (7,786 ) (7,392 ) Ending balance $ 94,006 $ 76,835

Business Combinations (Tables)

Business Combinations (Tables)	12 Months Ended
	Dec. 31, 2018
SCB Bancorp [Member]
Business Acquisition [Line Items]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]	The following unaudited pro forma condensed combined financial information presents the results of operations of the Company, including the effects of the purchase accounting adjustments and acquisition expenses, had the Soy Capital Bank acquisition taken place at the beginning of the period (in thousands, except share data): Twelve months ended December 31, 2018 2017 Net interest income 123,161 105,925 Provision for loan losses 8,667 7,462 Non-interest income 52,257 47,719 Non-interest expense 112,246 100,933 Income before income taxes 54,505 45,249 Income tax expense 12,711 16,352 Net income available to common stockholders $ 41,794 $ 28,897 Earnings per share Basic $2.67 $2.08 Diluted $2.67 $2.08 Basic weighted average shares outstanding 15,646,359 13,862,230 Diluted weighted average shares outstanding 15,659,818 13,867,105
Business Acquisition, Pro Forma Information [Table Text Block]	The following unaudited pro forma condensed combined financial information presents the results of operations of the Company, including the effects of the purchase accounting adjustments and acquisition expenses, had the Soy Capital Bank acquisition taken place at the beginning of the period (in thousands, except share data): Twelve months ended December 31, 2018 2017 Net interest income 123,161 105,925 Provision for loan losses 8,667 7,462 Non-interest income 52,257 47,719 Non-interest expense 112,246 100,933 Income before income taxes 54,505 45,249 Income tax expense 12,711 16,352 Net income available to common stockholders $ 41,794 $ 28,897 Earnings per share Basic $2.67 $2.08 Diluted $2.67 $2.08 Basic weighted average shares outstanding 15,646,359 13,862,230 Diluted weighted average shares outstanding 15,659,818 13,867,105
First BancTrust [Member]
Business Acquisition [Line Items]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]	The following table summarizes the estimated fair values of assets acquired and liabilities assumed at the date of the First Bank acquisition (in thousands). Acquired Adjustments As Recorded by Assets Cash & due from banks $ 20,598 $ 20,598 Investment Securities 59,906 (320 ) 59,586 Loans 371,156 (7,875 ) 363,281 Allowance for loan losses (4,412 ) 4,412 — Other real estate owned 547 (12 ) 535 Premises and equipment 10,126 (689 ) 9,437 Goodwill 543 25,948 26,491 Core deposit intangible — 5,224 5,224 Other assets 16,389 (256 ) 16,133 Total assets acquired $ 474,853 $ 26,432 $ 501,285 Liabilities and Stockholders' Equity Deposits $ 384,323 $ 1,301 $ 385,624 FHLB advances 31,000 (328 ) 30,672 Subordinated debentures 6,186 (1,451 ) 4,735 Other liabilities 8,665 (36 ) 8,629 Total liabilities assumed 430,174 (514 ) 429,660 Net assets acquired $ 44,679 $ 26,946 $ 71,625 Consideration Paid Cash $ 10,275 Common stock 61,350 Total consideration paid $ 71,625
Business Acquisition, Pro Forma Information [Table Text Block]	The following unaudited pro forma condensed combined financial information presents the results of operations of the Company, including the effects of the purchase accounting adjustments and acquisition expenses, had the First Bank acquisition taken place at the beginning of the period (in thousands, except share data): Twelve months ended December 31, 2018 2017 Net interest income 117,450 110,990 Provision for loan losses 8,867 8,365 Non-interest income 36,526 34,060 Non-interest expense 94,464 94,843 Income before income taxes 50,645 41,842 Income tax expense 12,456 15,849 Net income available to common stockholders $ 38,189 $ 25,993 Earnings per share Basic $2.60 $1.83 Diluted $2.59 $1.83 Basic weighted average shares outstanding 14,704,888 14,175,559 Diluted weighted average shares outstanding 14,721,708 14,180,434

Leases (Tables)

Leases (Tables)	12 Months Ended
	Dec. 31, 2018
Leases [Abstract]
Future minimum lease payments under operating leases	Future minimum lease payments under operating leases are (in thousands): Operating Leases 2019 $ 2,880 2020 2,495 2021 2,279 2022 2,223 2023 2,197 Thereafter 33,255 Total minimum lease payments $ 45,329

Parent Company Only Financial_2

Parent Company Only Financial Statements (Tables)	12 Months Ended
	Dec. 31, 2018
Condensed Financial Information Disclosure [Abstract]
Condensed balance sheets	First Mid-Illinois Bancshares, Inc. (Parent Company) Balance Sheets December 31, 2018 2017 Assets Cash $ 18,571 $ 8,296 Premises and equipment, net 3,127 2,654 Investment in subsidiaries 498,544 328,830 Other assets 4,637 3,555 Total Assets $ 524,879 $ 343,335 Liabilities and Stockholders’ equity Liabilities Debt 29,000 34,313 Other liabilities 20,015 1,058 Total Liabilities 49,015 35,371 Stockholders’ equity 475,864 307,964 Total Liabilities and Stockholders’ equity $ 524,879 $ 343,335
Condensed statements of income	First Mid-Illinois Bancshares, Inc. (Parent Company) Statements of Income and Comprehensive Income Years ended December 31, 2018 2017 2016 Income: Dividends from subsidiaries $ 21,694 $ 18,925 $ 19,475 Other income 171 1,227 66 Total income 21,865 20,152 19,541 Operating expenses 5,424 3,902 3,491 Income before income taxes and equity in undistributed earnings of subsidiaries 16,441 16,250 16,050 Income tax benefit 1,274 864 1,073 Income before equity in undistributed earnings of subsidiaries 17,715 17,114 17,123 Equity in undistributed earnings of subsidiaries 18,885 9,570 4,717 Net income 36,600 26,684 21,840 Other comprehensive income (loss), net of taxes (4,169 ) 3,525 (6,484 ) Comprehensive income $ 32,431 $ 30,209 $ 15,356
Condensed statements of cash flows	First Mid-Illinois Bancshares, Inc. (Parent Company) Statements of Cash Flows Years ended December 31, 2018 2017 2016 Cash flows from operating activities: Net income $ 36,600 $ 26,684 $ 21,840 Adjustments to reconcile net income to net cash provided by operating activities: Depreciation, amortization, accretion, net 90 82 87 Dividends received from subsidiary 21,694 18,925 19,475 Equity in undistributed earnings of subsidiaries (18,885 ) (9,570 ) (4,717 ) Increase in other assets (1,645 ) (19,348 ) (111,379 ) Increase in other liabilities 79 733 153 Net cash provided by (used in) operating activities 37,933 17,506 (74,541 ) Cash flows from investing activities: Investment in subsidiary (13,430 ) — (5,000 ) Net cash from business acquisition (29,321 ) — 68,798 Net cash provided by (used in) investing activities (42,751 ) — 63,798 Cash flows from financing activities: Repayment of short-term debt — (4,000 ) (3,000 ) Proceeds from short-term debt — — 7,000 Repayment of long-term debt (10,313 ) (3,750 ) (938 ) Proceeds from long-term debt — — 15,000 Proceeds from issuance of common stock 36,645 4,399 195 Payment to repurchase common stock (138 ) (797 ) — Direct expense related to capital transactions (2,309 ) (216 ) (229 ) Dividends paid on preferred stock — — (1,286 ) Dividends paid on common stock (8,792 ) (7,228 ) (5,277 ) Net cash provided by (used in) financing activities 15,093 (11,592 ) 11,465 Increase (decrease) in cash 10,275 5,914 722 Cash at beginning of year 8,296 2,382 1,660 Cash at end of year $ 18,571 $ 8,296 $ 2,382

Quarterly Financial Data -- U_2

Quarterly Financial Data -- Unaudited (Tables)	12 Months Ended
	Dec. 31, 2018
Quarterly Financial Data [Abstract]
Quarterly financial data - unaudited	The following table presents summarized quarterly data for each of the two years ended December 31, 2018 and 2017 (in thousands): Quarters ended in 2018 March 31 June 30 September 30 December 31 Selected operations data: Interest income $ 25,158 $ 30,131 $ 33,488 $ 35,788 Interest expense 1,963 2,677 3,401 4,786 Net interest income 23,195 27,454 30,087 31,002 Provision for loan losses 1,055 1,877 2,551 3,184 Net interest income after provision for loan losses 22,140 25,577 27,536 27,818 Other income 7,487 8,361 7,919 11,647 Other expense 18,374 20,796 24,490 26,320 Income before income taxes 11,253 13,142 10,965 13,145 Income taxes 2,863 3,105 2,731 3,206 Net income available to common stockholders $ 8,390 $ 10,037 $ 8,234 $ 9,939 Basic earnings per common share $0.66 $0.72 $0.54 $0.62 Diluted earnings per common share 0.66 0.72 0.54 0.62 Quarters ended in 2017 March 31 June 30 September 30 December 31 Selected operations data: Interest income $ 24,182 $ 25,446 $ 24,614 $ 25,313 Interest expense 1,410 1,493 1,741 1,838 Net interest income 22,772 23,953 22,873 23,475 Provision for loan losses 1,722 1,840 1,489 2,411 Net interest income after provision for loan losses 21,050 22,113 21,384 21,064 Other income 7,496 7,969 7,661 7,210 Other expense 19,202 17,955 17,912 19,152 Income before income taxes 9,344 12,127 11,133 9,122 Income taxes 3,080 3,927 3,538 4,497 Net income 6,264 8,200 7,595 4,625 Dividends on preferred shares — — — — Net income available to common stockholders $ 6,264 $ 8,200 $ 7,595 $ 4,625 Basic earnings per common share $ 0.50 $ 0.66 $ 0.61 $ 0.37 Diluted earnings per common share 0.50 0.66 0.61 0.37

Summary of Significant Accoun_4

Summary of Significant Accounting Policies Summary of Significant Accounting Policies (PP&E) (Details)	12 Months Ended
	Dec. 31, 2018
Buildings and improvements | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	20 years
Buildings and improvements | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	40 years
Leasehold improvements | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	5 years
Leasehold improvements | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	15 years
Furniture and equipment | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Furniture and equipment | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	7 years

Summary of Significant Accoun_5

Summary of Significant Accounting Policies Summary of Significant Accounting Policies (Trust Assets) (Details) $ in Thousands	Dec. 31, 2018USD ($)trust_accounts	Dec. 31, 2017USD ($)trust_accounts
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of Trust Accounts managed or administered | trust_accounts	1,141	1,119
Value of Trust Accounts | $	$ 1,129,600	$ 997,790

Summary of Significant Accoun_6

Summary of Significant Accounting Policies Summary of Significant Accounting Policies (SIP) (Details) - shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of shares to be issued in stock incentive plan (in shares)	149,983
Options, Grants in Period, Gross	0	0	0
RSA/RSU, Grants in Period, Gross	28,700	18,391	13,912
Employee Discount for Employee Stock Purchase Plan	5.00%
Employee Stock Purchase Plan, Number Of Shares Authorized	600,000
Stock Unit Awards and Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
RSA/RSU, Grants in Period, Gross			13,912
Stock Unit Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
RSA/RSU, Grants in Period, Gross	28,700	18,391

Summary of Significant Accoun_7

Summary of Significant Accounting Policies (AOCI) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated other comprehensive income (loss), net of tax	$ (6,473)	$ (2,304)
Realized gains on available-for-sale securities	901	616	$ 1,192
Other Comprehensive Income (Loss), Reclassification Adjustment for Sale of Securities Included in Net Income, Tax	(261)	(216)	(465)
Total reclassifications out of accumulated other comprehensive income	640	400	$ 727
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Net unrealized losses on securities available-for-sale	(8,951)	(2,619)
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss	166	281
Securities with other-than-temporary impairment losses	0	(345)
Tax benefit	2,644	841
Other Than Temporary Impairment Losses Investments Portion In Accumulated Other Comprehensive Income Loss Tax Including Portion Attributable To Noncontrolling Interest Available For Sale Securities	0	(100)
Other Comprehensive Income (Loss), Tax	2,644	941
Accumulated Other Comprehensive Income (Loss), Debt Securities, Available-for-sale, Adjustment, after Tax	(6,473)	(2,059)
Accumulated Other Comprehensive Income (Loss), Other than Temporary Impairment, Not Credit Loss, Net of Tax, Debt Securities	$ 0	$ 245

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Basic Net Income per Common Share Available to Common Stockholders [Abstract]
Net income					$ 4,625,000	$ 7,595,000	$ 8,200,000	$ 6,264,000	$ 36,600,000	$ 26,684,000	$ 21,840,000
Preferred stock dividends									0	0	(825,000)
Net income available to common stockholders	$ 9,939,000	$ 8,234,000	$ 10,037,000	$ 8,390,000	$ 4,625,000	$ 7,595,000	$ 8,200,000	$ 6,264,000	$ 36,600,000	$ 26,684,000	$ 21,015,000
Weighted average common shares outstanding									14,487,126	12,531,659	10,149,099
Basic earnings per common share	$ 0.62	$ 0.54	$ 0.72	$ 0.66	$ 0.37	$ 0.61	$ 0.66	$ 0.50	$ 2.53	$ 2.13	$ 2.07
Diluted Net Income per Common Share Available to Common Stockholders [Abstract]
Net income available to common stockholders	$ 9,939,000	$ 8,234,000	$ 10,037,000	$ 8,390,000	$ 4,625,000	$ 7,595,000	$ 8,200,000	$ 6,264,000	$ 36,600,000	$ 26,684,000	$ 21,015,000
Effect of assumed preferred stock conversion									0	0	825,000
Net income applicable to diluted earnings per share									$ 36,600,000	$ 26,684,000	$ 21,840,000
Weighted average common shares outstanding									14,487,126	12,531,659	10,149,099
Dilutive potential common shares [Abstract]
Assumed conversion of stock options									209	4,875	3,111
Restricted stock awarded									13,250	0	4,107
Assumed conversion of preferred stock									0	0	507,393
Dilutive potential common shares									13,459	4,875	514,611
Diluted weighted average common shares outstanding									14,500,585	12,536,534	10,663,710
Diluted earnings per common share	$ 0.62	$ 0.54	$ 0.72	$ 0.66	$ 0.37	$ 0.61	$ 0.66	$ 0.50	$ 2.52	$ 2.13	$ 2.05

Cash and Due from Banks Cash an

Cash and Due from Banks Cash and Due from Banks (Details) - USD ($)	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash and Cash Equivalents [Line Items]
Restricted Cash and Cash Equivalents, Current	$ 14,564,000	$ 8,944,000	$ 16,643,000
Cash, Uninsured Amount	$ 1,906,000

Investment Securities, Part II

Investment Securities, Part II (Details)	12 Months Ended
	Dec. 31, 2018USD ($)securities	Dec. 31, 2017USD ($)securities	Dec. 31, 2016USD ($)
Debt Securities, Available-for-sale [Line Items]
Proceeds from Sale of Available-for-sale Securities	$ 13,152,000	$ 159,663,000	$ 70,757,000
Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract]
One year or less	172,560,000
After 1 through 5 years	302,833,000
After 5 through 10 years	215,444,000
After ten years	1,437,000
Fair Value	$ 692,274,000	578,579,000
Available-for-sale, Weighted Average Yield, Maturities Year One (in hundredths)	2.57%
Available-for-sale , Weighted Average Yield, Maturities After 1 through 5 Years (in hundredths)	2.83%
Available-for-sale, Weighted Average Yield, Maturities After 5 through 10 Years (in hundredths)	2.93%
Available-for-sale , Weighted Average Yield, Maturities After 10 Years (in hundredths)	3.10%
Available-for-sale , Weighted Average Yield, Maturities (in hundredths)	2.80%
Available-for-sale, Full Tax-equivalent Yield, Maturities Year One (in hundredths)	2.70%
Available-for-sale, Full Tax-equivalent Yield, Maturities After 1 through 5 Years (in hundredths)	3.14%
Available-for-sale, Full Tax-equivalent Yield, Maturities After 5 through 10 years (in hundredths)	3.34%
Available-for-sale, Full Tax-equivalent Yield, Maturities After Ten Years (in hundredths)	4.14%
Available-for-sale, Full Tax-equivalent Yield, Maturities (in hundredths)	3.10%
Debt Securities, Held-to-maturity, Maturity, Amortized Cost, Net [Abstract]
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, within One Year, Amortized Cost	$ 39,995,000
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Amortized Cost	29,441,000
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Amortized Cost	0
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after 10 Years, Amortized Cost	0
Held-to-maturity, at amortized cost (estimated fair value of $67,909 and $68,457 at December 31, 2018 and 2017, respectively)	$ 69,436,000	$ 69,332,000
Held To Maturity Weighted Average Yield Maturities Year One	1.76%
Held To Maturity Weighted Average Yield Maturities After 1 Through 5 Years	2.08%
Held To Maturity Weighted Average Yield Maturities After 5 Through 10 Years	0.00%
Held To Maturity Weighted Average Yield Maturities After 10 Years	0.00%
Held To Maturity Weighted Average Yield Maturities	1.90%
Held To Maturity Tax Equivalent Yield Maturities Year One	1.76%
Held To Maturity Tax Equivalent Yield Maturities After 1 Through 5 Years	2.08%
Held To Maturity Tax Equivalent Yield Maturities After 5 Through 10 Years	0.00%
Held To Maturity Tax Equivalent Yield Maturities After 10 Years	0.00%
Held To Maturity Tax Equivalent Yield Maturities	1.90%
Tax rate used to calculate tax-equivalent yields (in hundredths)	21.00%	35.00%
Percentage investment book value exceeds total stockholders' equity (in hundredths)	10.00%
Available-for-sale Securities, Restricted	$ 628,307,000	$ 479,398,000
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	136,312,000	289,151,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(1,748,000)	(3,251,000)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	319,611,000	82,396,000
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(9,513,000)	(2,613,000)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	455,923,000	371,547,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(11,261,000)	(5,864,000)
Credit losses on trust preferred securities held [Abstract]
Beginning of period	1,111,000	1,111,000	1,111,000
Additions related to OTTI losses not previously recognized	0	0	0
Reductions due to sales / (recoveries)	(1,111,000)	0	0
Reductions due to change in intent or likelihood of sale	0	0	0
Additions related to increases in previously recognized OTTI losses	0	0	0
Reductions due to increases in expected cash flows	0	0	0
End of period	0	1,111,000	1,111,000
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, within One Year, Fair Value	38,790,000
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Fair Value	29,119,000
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Fair Value	0
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after 10 Years, Fair Value	0
Debt Securities, Held-to-maturity, Fair Value	67,909,000	68,457,000
Available-for-sale Securities, Amortized Cost Basis	701,225,000	581,543,000
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	2,310,000	2,900,000
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	11,261,000	5,864,000
Available-for-sale Securities, Gross Realized Gains	941,000	773,000	1,192,000
Available-for-sale Securities, Gross Realized Losses	40,000	157,000	0
Available-for-sale Securities, Income Tax Expense	261,000	216,000	$ 465,000
U.S. Treasury securities and obligations of U.S. government corporations & agencies
Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract]
One year or less	148,656,000
After 1 through 5 years	49,993,000
After 5 through 10 years	0
After ten years	0
Fair Value	198,649,000	113,770,000
Debt Securities, Held-to-maturity, Maturity, Amortized Cost, Net [Abstract]
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, within One Year, Amortized Cost	39,995,000
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Amortized Cost	29,441,000
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Amortized Cost	0
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after 10 Years, Amortized Cost	0
Held-to-maturity, at amortized cost (estimated fair value of $67,909 and $68,457 at December 31, 2018 and 2017, respectively)	69,436,000	69,332,000
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	16,095,000	58,584,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(148,000)	(540,000)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	105,549,000	47,972,000
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(3,087,000)	(1,494,000)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	121,644,000	106,556,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	$ (3,235,000)	$ (2,034,000)
Number of AFS securities in Unrealized Loss Positions | securities	23	11
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position [Abstract]
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 19,683,000	$ 34,101,000
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(147,000)	(525,000)
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	48,226,000	14,540,000
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(1,380,000)	(453,000)
Debt Securities, Held-to-maturity, Unrealized Loss Position, Fair Value	67,909,000	48,641,000
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss	$ (1,527,000)	$ (978,000)
Number of HTM securities in Unrealized Loss Positions | securities	9	7
Credit losses on trust preferred securities held [Abstract]
Debt Securities, Held-to-maturity, Fair Value	$ 67,909,000	$ 68,457,000
Available-for-sale Securities, Amortized Cost Basis	201,380,000	115,796,000
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	504,000	8,000
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	3,235,000	2,034,000
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain	0	103,000
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss	1,527,000	978,000
Obligations of states and political subdivisions
Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract]
One year or less	23,282,000
After 1 through 5 years	89,930,000
After 5 through 10 years	78,294,000
After ten years	1,073,000
Fair Value	192,579,000	166,266,000
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	38,782,000	42,618,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(450,000)	(769,000)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	42,741,000	9,267,000
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(1,390,000)	(256,000)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	81,523,000	51,885,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	$ (1,840,000)	(1,025,000)
Number of AFS securities in Unrealized Loss Positions | securities	84
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position [Abstract]
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		(39)
Credit losses on trust preferred securities held [Abstract]
Available-for-sale Securities, Amortized Cost Basis	$ 193,195,000	165,037,000
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	1,224,000	2,254,000
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	1,840,000	1,025,000
Mortgage-backed securities
Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract]
One year or less	622,000
After 1 through 5 years	160,900,000
After 5 through 10 years	137,150,000
After ten years	0
Fair Value	298,672,000	293,811,000
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	81,435,000	187,949,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(1,150,000)	(1,942,000)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	171,321,000	22,609,000
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(5,036,000)	(518,000)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	252,756,000	210,558,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	$ (6,186,000)	$ (2,460,000)
Number of AFS securities in Unrealized Loss Positions | securities	69	26
Credit losses on trust preferred securities held [Abstract]
Available-for-sale Securities, Amortized Cost Basis	$ 304,372,000	$ 295,778,000
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	486,000	493,000
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	6,186,000	2,460,000
Trust preferred securities
Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract]
Fair Value		2,548,000
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value		0
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value		2,548,000
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		(345,000)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value		2,548,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss		$ (345,000)
Number of AFS securities in Unrealized Loss Positions | securities		1
Credit losses on trust preferred securities held [Abstract]
Available-for-sale Securities, Amortized Cost Basis		$ 2,893,000
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax		0
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax		345,000
Other securities
Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract]
One year or less	0
After 1 through 5 years	2,010,000
After 5 through 10 years	0
After ten years	364,000
Fair Value	2,374,000	2,184,000
Credit losses on trust preferred securities held [Abstract]
Available-for-sale Securities, Amortized Cost Basis	2,278,000	2,039,000
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	96,000	145,000
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	$ 0	$ 0

Investment Securities Investm_2

Investment Securities Investment Securities, Part III (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Amortized Cost [Abstract]
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Amortized Cost	$ 174,049
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Amortized Cost	142,357
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Amortized Cost	79,095
Debt Securities, Available-for-sale, Allocated and Single Maturity Date, Maturity, after 10 Years, Amortized Cost	1,352
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Amortized Cost	396,853
Debt Securities, Available-for-sale, Maturity, Amortized Cost, Rolling Maturity [Abstract]
Debt Securities, Available-for-sale, Amortized Cost	701,225
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Amortized Cost	304,372
Available-For-Sale Securities, Debt Maturities, SIngle Maturity Date, Fair Value single maturity [Abstract]
AFS Securities, Debt Maturities, Single Maturity Date, Next Twelve Months, Fair Value	171,938
AFS Securities, Debt Maturities, Single Maturity Date, Year Two Through Five, Fair Value	141,933
AFS Securities, Debt Maturities, Single Maturity Date, Year Six Through Ten, Fair Value	78,294
AFS Securities, Debt Maturities, Single Maturity Date, After Ten Years, Fair Value	1,437
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Fair Value	393,602
Debt Securities, Available-for-sale, Maturity, Fair Value, Rolling Maturity [Abstract]
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value	298,672
Fair Value	692,274	$ 578,579
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, Amortized Cost [Abstract]
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, within One Year, Amortized Cost	39,995
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Amortized Cost	29,441
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Amortized Cost	0
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after 10 Years, Amortized Cost	0
Held-to-maturity, at amortized cost (estimated fair value of $67,909 and $68,457 at December 31, 2018 and 2017, respectively)	69,436	69,332
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, Fair Value [Abstract]
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, within One Year, Fair Value	38,790
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Fair Value	29,119
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Fair Value	0
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after 10 Years, Fair Value	0
Debt Securities, Held-to-maturity, Fair Value	$ 67,909	$ 68,457

Loans and Allowance for Loan _3

Loans and Allowance for Loan Losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 2,658,136	$ 1,946,114
Loans Receivable Held-for-sale, Amount	1,508	1,025
loans and leases receivable gross excluding loans held for sale	2,656,628	1,945,089
Net deferred loan fees, premiums and discounts	(13,617)	(6,613)
Allowance for loan losses	26,189	19,977	$ 16,753	$ 14,576
Net loans	2,616,822	1,918,499
Loans held for sale	1,508	1,025
Increase (Decrease) in Accounts and Notes Receivable	698,300
Loans Receivable, Net	2,644,519	1,939,501
Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	51,013	107,721
Loans Receivable, Net	50,619	107,594
Farm loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	232,409	127,232
Loans Receivable, Net	231,700	127,183
1-4 Family residential properties
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	374,751	294,483
Loans Receivable, Net	373,518	293,667
Multifamily residential properties
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	186,393	61,966
Loans Receivable, Net	184,051	61,798
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	911,656	684,639
Loans Receivable, Net	$ 906,850	681,757
Debt coverage ratio	1.20x
Amortization period of loans	twenty years
Commercial real estate | Minimum [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan To Value Ratio	65.00%
Commercial real estate | Maximum [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan To Value Ratio	80.00%
Loans secured by real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 1,756,222	1,276,041
Loans Receivable, Net	1,746,738	1,271,999
Agricultural loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	136,125	86,602
Loans Receivable, Net	135,877	86,631
Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	559,120	445,378
Loans Receivable, Net	$ 557,011	444,263
Loan To Value Ratio	80.00%
Amortization period of loans	seven years
Loans Receivable, Time Period	one year
Consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 92,744	30,070
Allowance for loan losses	932	803	693	642
Loans Receivable, Net	91,516	29,749
All other loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	113,925	108,023
Loans Receivable, Net	113,377	106,859
Agricultural and Farm Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	368,534	213,834
Increase (Decrease) in Accounts and Notes Receivable	$ 154,700
Loan To Value Ratio	65.00%
Amortization period of loans	twenty five years
Loans Receivable, Time Period	one year
Other Grain Farming [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 276,100	170,758
Increase (Decrease) in Accounts and Notes Receivable	105,300
Motels and Hotels Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	129,216	131,702
Non-residential Buildings [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	250,495	185,967
Residential Buildings [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	289,169	131,756
Other Gambling Industries [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	105,259	95,713
Commercial/Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	21,556	16,546	12,901	11,379
Agriculture/Agricultural Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	2,197	1,742	2,249	1,337
Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	$ 1,504	886	874	994
Loan To Value Ratio	80.00%
Amortization period of loans	twenty five years
Balloon period	five years
Unallocated [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses	$ 0	$ 0	$ 36	$ 224

Loans and Allowance for Loan _4

Loans and Allowance for Loan Losses, Part II (Details)		12 Months Ended
		Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		$ 2,644,519,000	$ 1,939,501,000
Loans Receivable Aging Analysis [Abstract]
Total Past Due		28,037,000	10,919,000
Current		2,616,482,000	1,928,582,000
Total Loans Greater than 90 Days Past Due and Still Accruing		$ 0	0
Number of days past due when interest is not accrued		ninety days
Period of satisfactory performance before returning to accrual status		six months
Loans with a specific allowance [Abstract]
Recorded Balance		$ 32,603,000	13,345,000
Unpaid Principal Balance		34,178,000	14,747,000
Specific Allowance		3,279,000	623,000
Loans without a specific allowance [Abstract]
Recorded Balance		15,385,000	4,168,000
Unpaid Principal Balance		17,126,000	4,470,000
Total Loans [Abstract]
Recorded Balance		47,988,000	17,513,000
Unpaid Principal Balance		51,304,000	19,217,000
Average recorded investment and interest income recognized [Abstract]
Average investment in impaired loans		38,618,000	17,183,000	$ 17,359,000
Interest income recognized		619,000	51,000	119,000
Balances of Nonaccrual Loans [Abstract]
Recorded balance of nonaccrual loans		27,298,000	16,659,000
Interest Lost on Nonaccrual Loans		1,189,000,000	471,000,000	133,000,000
Troubled Debt Restructuring [Abstract]
Troubled Debt Restructurings Balance		9,956,000	8,898,000
Troubled Debt Restructuring, Allowance		1,418,000	37,000
Recorded Balance of Troubled Debt Restructurings [Abstract]
Troubled Debt Restructurings Balance		9,956,000	8,898,000
Financing Receivable Modifications Performing Recorded Investment		2,451,000	854,000
Financing Receivables, Modifications during Period, Balance		$ 1,262,000	$ 6,691,000
Financing Receivables, Modifications during Period, Number		23	13
Subsequent Default, Number of Days Past Due		ninety days
Financing Receivable, Modifications, Subsequent Default, Number of Contracts		1	1
Other real estate owned		$ 2,534,000	$ 2,754,000
Mortgage Loans Secured By Real Estate In Foreclosure		425,000	404,000
Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		2,511,889,000	1,860,539,000
Watch [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		58,716,000	42,675,000
Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		73,914,000	36,287,000
Doubtful [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		0	0
Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		50,619,000	107,594,000
Loans Receivable Aging Analysis [Abstract]
Total Past Due		503,000	74,000
Current		50,116,000	107,520,000
Total Loans Greater than 90 Days Past Due and Still Accruing		0	0
Loans with a specific allowance [Abstract]
Recorded Balance		2,559,000	0
Unpaid Principal Balance		2,559,000	0
Specific Allowance		14,000	0
Loans without a specific allowance [Abstract]
Recorded Balance		48,000	0
Unpaid Principal Balance		48,000	0
Total Loans [Abstract]
Recorded Balance		2,607,000	0
Unpaid Principal Balance		2,607,000	0
Average recorded investment and interest income recognized [Abstract]
Average investment in impaired loans		2,558,000	0	229,000
Interest income recognized		37,000	0	0
Balances of Nonaccrual Loans [Abstract]
Recorded balance of nonaccrual loans		377,000	0
Troubled Debt Restructuring [Abstract]
Troubled Debt Restructurings Balance		0	0
Recorded Balance of Troubled Debt Restructurings [Abstract]
Troubled Debt Restructurings Balance		0	0
Construction and land development | Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		49,794,000	107,140,000
Construction and land development | Watch [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		471,000	454,000
Construction and land development | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		354,000	0
Construction and land development | Doubtful [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		0	0
Farm loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		231,700,000	127,183,000
Loans Receivable Aging Analysis [Abstract]
Total Past Due		804,000	396,000
Current		230,896,000	126,787,000
Total Loans Greater than 90 Days Past Due and Still Accruing		0	0
Loans with a specific allowance [Abstract]
Recorded Balance		0	276,000
Unpaid Principal Balance		0	276,000
Specific Allowance		0	0
Loans without a specific allowance [Abstract]
Recorded Balance		309,000	15,000
Unpaid Principal Balance		309,000	15,000
Total Loans [Abstract]
Recorded Balance		309,000	291,000
Unpaid Principal Balance		309,000	291,000
Average recorded investment and interest income recognized [Abstract]
Average investment in impaired loans		415,000	293,000	207,000
Interest income recognized		0	0	0
Balances of Nonaccrual Loans [Abstract]
Recorded balance of nonaccrual loans		309,000	291,000
Farm loans | Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		221,047,000	120,767,000
Farm loans | Watch [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		7,805,000	4,829,000
Farm loans | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		2,848,000	1,587,000
Farm loans | Doubtful [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		0	0
1-4 Family residential properties
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		373,518,000	293,667,000
Loans Receivable Aging Analysis [Abstract]
Total Past Due		10,478,000	5,328,000
Current		363,040,000	288,339,000
Total Loans Greater than 90 Days Past Due and Still Accruing		0	0
Loans with a specific allowance [Abstract]
Recorded Balance		4,565,000	1,026,000
Unpaid Principal Balance		4,952,000	1,347,000
Specific Allowance		234,000	25,000
Loans without a specific allowance [Abstract]
Recorded Balance		3,680,000	2,239,000
Unpaid Principal Balance		4,769,000	2,664,000
Total Loans [Abstract]
Recorded Balance		8,245,000	3,265,000
Unpaid Principal Balance		9,721,000	4,011,000
Average recorded investment and interest income recognized [Abstract]
Average investment in impaired loans		6,297,000	3,267,000	2,988,000
Interest income recognized		144,000	29,000	22,000
Loans Receivable, Modifications, Still Accruing Interest		1,769,000	578,000
Balances of Nonaccrual Loans [Abstract]
Recorded balance of nonaccrual loans		5,762,000	2,687,000
Troubled Debt Restructuring [Abstract]
Troubled Debt Restructurings Balance		2,472,000	874,000
Recorded Balance of Troubled Debt Restructurings [Abstract]
Troubled Debt Restructurings Balance		2,472,000	874,000
Financing Receivable Modifications Performing Recorded Investment		1,769,000	578,000
Financing Receivables, Modifications during Period, Balance		$ 688,000	$ 196,000
Financing Receivables, Modifications during Period, Number	[1]	16	3
1-4 Family residential properties | Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		$ 352,583,000	$ 282,441,000
1-4 Family residential properties | Watch [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		5,526,000	2,654,000
1-4 Family residential properties | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		15,409,000	8,572,000
1-4 Family residential properties | Doubtful [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		0	0
Multifamily residential properties
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		184,051,000	61,798,000
Loans Receivable Aging Analysis [Abstract]
Total Past Due		3,104,000	0
Current		180,947,000	61,798,000
Total Loans Greater than 90 Days Past Due and Still Accruing		0	0
Loans with a specific allowance [Abstract]
Recorded Balance		4,465,000	313,000
Unpaid Principal Balance		4,465,000	313,000
Specific Allowance		0	0
Loans without a specific allowance [Abstract]
Recorded Balance		7,597,000	55,000
Unpaid Principal Balance		7,597,000	55,000
Total Loans [Abstract]
Recorded Balance		12,062,000	368,000
Unpaid Principal Balance		12,062,000	368,000
Average recorded investment and interest income recognized [Abstract]
Average investment in impaired loans		9,666,000	377,000	3,824,000
Interest income recognized		137,000	1,000	55,000
Balances of Nonaccrual Loans [Abstract]
Recorded balance of nonaccrual loans		2,105,000	368,000
Troubled Debt Restructuring [Abstract]
Troubled Debt Restructurings Balance		0	0
Recorded Balance of Troubled Debt Restructurings [Abstract]
Troubled Debt Restructurings Balance		0	0
Financing Receivable Modifications Performing Recorded Investment		0	0
Multifamily residential properties | Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		163,845,000	60,954,000
Multifamily residential properties | Watch [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		8,144,000	476,000
Multifamily residential properties | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		12,062,000	368,000
Multifamily residential properties | Doubtful [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		0	0
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		906,850,000	681,757,000
Loans Receivable Aging Analysis [Abstract]
Total Past Due		5,496,000	3,694,000
Current		901,354,000	678,063,000
Total Loans Greater than 90 Days Past Due and Still Accruing		0	0
Loans with a specific allowance [Abstract]
Recorded Balance		12,517,000	5,544,000
Unpaid Principal Balance		12,804,000	5,565,000
Specific Allowance		1,553,000	531,000
Loans without a specific allowance [Abstract]
Recorded Balance		983,000	303,000
Unpaid Principal Balance		1,201,000	368,000
Total Loans [Abstract]
Recorded Balance		13,500,000	5,847,000
Unpaid Principal Balance		14,005,000	5,933,000
Average recorded investment and interest income recognized [Abstract]
Average investment in impaired loans		9,818,000	5,457,000	6,675,000
Interest income recognized		271,000	13,000	36,000
Loans Receivable, Modifications, Still Accruing Interest		676,000	251,000
Balances of Nonaccrual Loans [Abstract]
Recorded balance of nonaccrual loans		8,457,000	5,596,000
Troubled Debt Restructuring [Abstract]
Troubled Debt Restructurings Balance		1,706,000	1,376,000
Recorded Balance of Troubled Debt Restructurings [Abstract]
Troubled Debt Restructurings Balance		1,706,000	1,376,000
Financing Receivable Modifications Performing Recorded Investment		676,000	251,000
Financing Receivables, Modifications during Period, Balance		$ 479,000	$ 814,000
Financing Receivables, Modifications during Period, Number	[1]	2	2
Commercial real estate | Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		$ 861,086,000	$ 647,208,000
Commercial real estate | Watch [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		16,035,000	16,941,000
Commercial real estate | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		29,729,000	17,608,000
Commercial real estate | Doubtful [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		0	0
Loans secured by real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		1,746,738,000	1,271,999,000
Loans Receivable Aging Analysis [Abstract]
Total Past Due		20,385,000	9,492,000
Current		1,726,353,000	1,262,507,000
Total Loans Greater than 90 Days Past Due and Still Accruing		0	0
Loans with a specific allowance [Abstract]
Recorded Balance		24,106,000	7,159,000
Unpaid Principal Balance		24,780,000	7,501,000
Specific Allowance		1,801,000	556,000
Loans without a specific allowance [Abstract]
Recorded Balance		12,617,000	2,612,000
Unpaid Principal Balance		13,924,000	3,102,000
Total Loans [Abstract]
Recorded Balance		36,723,000	9,771,000
Unpaid Principal Balance		38,704,000	10,603,000
Average recorded investment and interest income recognized [Abstract]
Average investment in impaired loans		28,754,000	9,394,000	13,923,000
Interest income recognized		589,000	43,000	113,000
Balances of Nonaccrual Loans [Abstract]
Recorded balance of nonaccrual loans		17,010,000	8,942,000
Troubled Debt Restructuring [Abstract]
Troubled Debt Restructurings Balance		4,178,000	2,250,000
Recorded Balance of Troubled Debt Restructurings [Abstract]
Troubled Debt Restructurings Balance		4,178,000	2,250,000
Financing Receivable Modifications Performing Recorded Investment		2,445,000	829,000
Financing Receivables, Modifications during Period, Balance		$ 1,167,000	$ 1,010,000
Financing Receivables, Modifications during Period, Number		18	5
Agricultural loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		$ 135,877,000	$ 86,631,000
Loans Receivable Aging Analysis [Abstract]
Total Past Due		83,000	190,000
Current		135,794,000	86,441,000
Total Loans Greater than 90 Days Past Due and Still Accruing		0	0
Loans with a specific allowance [Abstract]
Recorded Balance		36,000	212,000
Unpaid Principal Balance		504,000	1,009,000
Specific Allowance		0	2,000
Loans without a specific allowance [Abstract]
Recorded Balance		631,000	545,000
Unpaid Principal Balance		163,000	0
Total Loans [Abstract]
Recorded Balance		667,000	757,000
Unpaid Principal Balance		667,000	1,009,000
Average recorded investment and interest income recognized [Abstract]
Average investment in impaired loans		727,000	878,000	1,394,000
Interest income recognized		23,000	0	0
Balances of Nonaccrual Loans [Abstract]
Recorded balance of nonaccrual loans		667,000	757,000
Troubled Debt Restructuring [Abstract]
Troubled Debt Restructurings Balance		499,000	757,000
Recorded Balance of Troubled Debt Restructurings [Abstract]
Troubled Debt Restructurings Balance		499,000	757,000
Financing Receivables, Modifications during Period, Balance		$ 67,000	$ 757,000
Financing Receivables, Modifications during Period, Number	[1]	2	4
Agricultural loans | Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		$ 127,863,000	$ 83,469,000
Agricultural loans | Watch [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		7,581,000	2,304,000
Agricultural loans | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		433,000	858,000
Agricultural loans | Doubtful [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		0	0
Commercial and industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		557,011,000	444,263,000
Loans Receivable Aging Analysis [Abstract]
Total Past Due		5,329,000	965,000
Current		551,682,000	443,298,000
Total Loans Greater than 90 Days Past Due and Still Accruing		0	0
Loans with a specific allowance [Abstract]
Recorded Balance		8,292,000	5,774,000
Unpaid Principal Balance		8,723,000	6,037,000
Specific Allowance		1,475,000	64,000
Loans without a specific allowance [Abstract]
Recorded Balance		1,660,000	909,000
Unpaid Principal Balance		2,027,000	1,249,000
Total Loans [Abstract]
Recorded Balance		9,952,000	6,683,000
Unpaid Principal Balance		10,750,000	7,286,000
Average recorded investment and interest income recognized [Abstract]
Average investment in impaired loans		9,003,000	6,586,000	1,485,000
Interest income recognized		6,000	8,000	4,000
Loans Receivable, Modifications, Still Accruing Interest		962,000	25,000
Balances of Nonaccrual Loans [Abstract]
Recorded balance of nonaccrual loans		8,990,000	6,658,000
Troubled Debt Restructuring [Abstract]
Troubled Debt Restructurings Balance		5,112,000	5,690,000
Recorded Balance of Troubled Debt Restructurings [Abstract]
Troubled Debt Restructurings Balance		5,112,000	5,690,000
Financing Receivable Modifications Performing Recorded Investment		0	25,000
Financing Receivables, Modifications during Period, Balance		$ 28,000	$ 4,924,000
Financing Receivables, Modifications during Period, Number	[1]	3	4
Commercial and industrial loans | Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		$ 535,186,000	$ 425,846,000
Commercial and industrial loans | Watch [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		9,967,000	11,492,000
Commercial and industrial loans | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		11,858,000	6,925,000
Commercial and industrial loans | Doubtful [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		0	0
Consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		91,516,000	29,749,000
Loans Receivable Aging Analysis [Abstract]
Total Past Due		1,543,000	272,000
Current		89,973,000	29,477,000
Total Loans Greater than 90 Days Past Due and Still Accruing		0	0
Loans with a specific allowance [Abstract]
Recorded Balance		169,000	200,000
Unpaid Principal Balance		171,000	200,000
Specific Allowance		3,000	1,000
Loans without a specific allowance [Abstract]
Recorded Balance		471,000	102,000
Unpaid Principal Balance		1,006,000	119,000
Total Loans [Abstract]
Recorded Balance		640,000	302,000
Unpaid Principal Balance		1,177,000	319,000
Average recorded investment and interest income recognized [Abstract]
Average investment in impaired loans		131,000	325,000	557,000
Interest income recognized		1,000	0	2,000
Balances of Nonaccrual Loans [Abstract]
Recorded balance of nonaccrual loans		625,000	302,000
Troubled Debt Restructuring [Abstract]
Troubled Debt Restructurings Balance		167,000	201,000
Recorded Balance of Troubled Debt Restructurings [Abstract]
Troubled Debt Restructurings Balance		167,000	201,000
Financing Receivable Modifications Performing Recorded Investment		6,000	0
Consumer loans | Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		90,133,000	29,375,000
Consumer loans | Watch [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		177,000	5,000
Consumer loans | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		1,206,000	369,000
Consumer loans | Doubtful [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		0	0
All other loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		113,377,000	106,859,000
Loans Receivable Aging Analysis [Abstract]
Total Past Due		697,000	0
Current		112,680,000	106,859,000
Total Loans Greater than 90 Days Past Due and Still Accruing		0	0
Loans with a specific allowance [Abstract]
Recorded Balance		0	0
Unpaid Principal Balance		0	0
Specific Allowance		0	0
Loans without a specific allowance [Abstract]
Recorded Balance		6,000	0
Unpaid Principal Balance		6,000	0
Total Loans [Abstract]
Recorded Balance		6,000	0
Unpaid Principal Balance		6,000	0
Average recorded investment and interest income recognized [Abstract]
Average investment in impaired loans		3,000	0	0
Interest income recognized		0	0	$ 0
Balances of Nonaccrual Loans [Abstract]
Recorded balance of nonaccrual loans		6,000	0
All other loans | Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		110,352,000	103,339,000
All other loans | Watch [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		3,010,000	3,520,000
All other loans | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		15,000	0
All other loans | Doubtful [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Net		0	0
Financing Receivables, 30 to 59 Days Past Due [Member]
Loans Receivable Aging Analysis [Abstract]
Total Past Due		9,370,000	3,509,000
Financing Receivables, 30 to 59 Days Past Due [Member] | Construction and land development
Loans Receivable Aging Analysis [Abstract]
Total Past Due		460,000	26,000
Financing Receivables, 30 to 59 Days Past Due [Member] | Farm loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due		0	0
Financing Receivables, 30 to 59 Days Past Due [Member] | 1-4 Family residential properties
Loans Receivable Aging Analysis [Abstract]
Total Past Due		3,347,000	3,023,000
Financing Receivables, 30 to 59 Days Past Due [Member] | Multifamily residential properties
Loans Receivable Aging Analysis [Abstract]
Total Past Due		1,149,000	0
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial real estate
Loans Receivable Aging Analysis [Abstract]
Total Past Due		1,349,000	90,000
Financing Receivables, 30 to 59 Days Past Due [Member] | Loans secured by real estate
Loans Receivable Aging Analysis [Abstract]
Total Past Due		6,305,000	3,139,000
Financing Receivables, 30 to 59 Days Past Due [Member] | Agricultural loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due		63,000	0
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial and industrial loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due		1,417,000	192,000
Financing Receivables, 30 to 59 Days Past Due [Member] | Consumer loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due		888,000	178,000
Financing Receivables, 30 to 59 Days Past Due [Member] | All other loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due		697,000	0
Financing Receivables, 60 to 89 Days Past Due [Member]
Loans Receivable Aging Analysis [Abstract]
Total Past Due		4,353,000	726,000
Financing Receivables, 60 to 89 Days Past Due [Member] | Construction and land development
Loans Receivable Aging Analysis [Abstract]
Total Past Due		43,000	48,000
Financing Receivables, 60 to 89 Days Past Due [Member] | Farm loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due		804,000	0
Financing Receivables, 60 to 89 Days Past Due [Member] | 1-4 Family residential properties
Loans Receivable Aging Analysis [Abstract]
Total Past Due		3,051,000	538,000
Financing Receivables, 60 to 89 Days Past Due [Member] | Multifamily residential properties
Loans Receivable Aging Analysis [Abstract]
Total Past Due		0	0
Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial real estate
Loans Receivable Aging Analysis [Abstract]
Total Past Due		89,000	38,000
Financing Receivables, 60 to 89 Days Past Due [Member] | Loans secured by real estate
Loans Receivable Aging Analysis [Abstract]
Total Past Due		3,987,000	624,000
Financing Receivables, 60 to 89 Days Past Due [Member] | Agricultural loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due		0	32,000
Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial and industrial loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due		10,000	3,000
Financing Receivables, 60 to 89 Days Past Due [Member] | Consumer loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due		356,000	67,000
Financing Receivables, 60 to 89 Days Past Due [Member] | All other loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due		0	0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans Receivable Aging Analysis [Abstract]
Total Past Due		14,314,000	6,684,000
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Construction and land development
Loans Receivable Aging Analysis [Abstract]
Total Past Due		0	0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Farm loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due		0	396,000
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | 1-4 Family residential properties
Loans Receivable Aging Analysis [Abstract]
Total Past Due		4,080,000	1,767,000
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Multifamily residential properties
Loans Receivable Aging Analysis [Abstract]
Total Past Due		1,955,000	0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Commercial real estate
Loans Receivable Aging Analysis [Abstract]
Total Past Due		4,058,000	3,566,000
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Loans secured by real estate
Loans Receivable Aging Analysis [Abstract]
Total Past Due		10,093,000	5,729,000
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Agricultural loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due		20,000	158,000
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Commercial and industrial loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due		3,902,000	770,000
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Consumer loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due		299,000	27,000
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | All other loans
Loans Receivable Aging Analysis [Abstract]
Total Past Due		$ 0	$ 0
[1]	Type of modifications:(a) Reduction of stated interest rate of loan(b) Change in payment terms(c) Extension of maturity date(d) Permanent reduction of the recorded investment

Loans and Allowance for Loan _5

Loans and Allowance for Loan Losses Loans and Allowance for Loan Losses - Allowance (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)alternative	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)
Financing Receivable, Impaired [Line Items]
Minimum balance of adversely classified loan in which a detailed analysis is performed	$ 250
Number of alternatives for measuring impaired loans receivable | alternative	3
Balance, beginning of year	$ 19,977	$ 16,753	$ 14,576
Provision for loan losses	8,667	7,462	2,826
Losses charged off	(2,993)	(5,195)	(1,675)
Recoveries	538	957	1,026
Balance, end of period	26,189	19,977	16,753
Individually evaluated for impairment	2,044	614	858
Collectively evaluated for impairment	22,910	19,354	15,881
Ending balance	2,644,519	1,939,501	1,825,992
Individually evaluated for impairment	16,980	13,086	5,266
Collectively evaluated for impairment	$ 2,611,916	1,926,156	1,812,640
Unsecured Open-end Loans [Member]
Financing Receivable, Impaired [Line Items]
Period When Loans Are Charged Down	180 days
Other Secured Loans [Member]
Financing Receivable, Impaired [Line Items]
Period When Loans Are Charged Down	120 days
Commercial/Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Balance, beginning of year	$ 16,546	12,901	11,379
Provision for loan losses	6,070	6,884	1,467
Losses charged off	(1,227)	(3,795)	(747)
Recoveries	167	556	802
Balance, end of period	21,556	16,546	12,901
Individually evaluated for impairment	1,816	586	192
Collectively evaluated for impairment	18,514	15,951	12,695
Ending balance	1,784,741	1,371,787	1,204,799
Individually evaluated for impairment	14,422	11,372	1,956
Collectively evaluated for impairment	1,756,908	1,360,156	1,199,003
Agriculture/Agricultural Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Balance, beginning of year	1,742	2,249	1,337
Provision for loan losses	548	153	933
Losses charged off	(93)	(662)	(30)
Recoveries	0	2	9
Balance, end of period	2,197	1,742	2,249
Individually evaluated for impairment	0	2	660
Collectively evaluated for impairment	2,197	1,740	1,589
Ending balance	367,211	213,521	212,513
Individually evaluated for impairment	32	488	1,345
Collectively evaluated for impairment	367,175	213,033	211,168
Residential Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Balance, beginning of year	886	874	994
Provision for loan losses	1,447	100	113
Losses charged off	(886)	(217)	(234)
Recoveries	57	129	1
Balance, end of period	1,504	886	874
Individually evaluated for impairment	225	25	6
Collectively evaluated for impairment	1,270	861	868
Ending balance	392,526	315,123	366,823
Individually evaluated for impairment	2,360	1,026	1,752
Collectively evaluated for impairment	$ 387,961	314,097	360,825
1-4 Family residential properties
Financing Receivable, Impaired [Line Items]
Period When Loans Are Charged Down	180 days
Consumer loans
Financing Receivable, Impaired [Line Items]
Balance, beginning of year	$ 803	693	642
Provision for loan losses	602	361	501
Losses charged off	(787)	(521)	(664)
Recoveries	314	270	214
Balance, end of period	932	803	693
Individually evaluated for impairment	3	1	0
Collectively evaluated for impairment	929	802	693
Ending balance	100,041	39,070	41,857
Individually evaluated for impairment	166	200	213
Collectively evaluated for impairment	99,872	38,870	41,644
Unallocated [Member]
Financing Receivable, Impaired [Line Items]
Balance, beginning of year	0	36	224
Provision for loan losses	0	(36)	(188)
Losses charged off	0	0	0
Recoveries	0	0	0
Balance, end of period	0	0	36
Individually evaluated for impairment	0	0	0
Collectively evaluated for impairment	0	0	36
Ending balance	0	0	0
Individually evaluated for impairment	0	0	0
Collectively evaluated for impairment	0	0	0
Financial Asset Acquired with Credit Deterioration [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Allowance for Credit Losses	1,235	9	14
Financing Receivable, Net	15,623	259	8,086
Financial Asset Acquired with Credit Deterioration [Member] | Commercial/Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Allowance for Credit Losses	1,226	9	14
Financing Receivable, Net	13,411	259	3,840
Financial Asset Acquired with Credit Deterioration [Member] | Agriculture/Agricultural Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Allowance for Credit Losses	0	0	0
Financing Receivable, Net	4	0	0
Financial Asset Acquired with Credit Deterioration [Member] | Residential Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Allowance for Credit Losses	9	0	0
Financing Receivable, Net	2,205	0	4,246
Financial Asset Acquired with Credit Deterioration [Member] | Consumer loans
Financing Receivable, Impaired [Line Items]
Financing Receivable, Allowance for Credit Losses	0	0	0
Financing Receivable, Net	3	0	0
Financial Asset Acquired with Credit Deterioration [Member] | Unallocated [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Allowance for Credit Losses	0	0	0
Financing Receivable, Net	$ 0	$ 0	$ 0

Loans and Allowance for Loan _6

Loans and Allowance for Loan Losses Loans and Allowance for Loan Losses (PCI Loans) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Nov. 15, 2018	May 01, 2018
Carrying Amount [Abstract]
Loans Receivable, Net	$ 2,644,519,000	$ 1,939,501,000
Loans and Leases Receivable, Net Amount	2,616,822,000	1,918,499,000
Contractual Payments at Acquisition [Abstract]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Provision for Loan Losses	889,000	14,000
Financial Asset Acquired with Credit Deterioration [Member]
Carrying Amount [Abstract]
Loans Receivable, Net	15,937,000	259,000
Financing Receivable, Allowance for Credit Losses	(1,235,000)	(9,000)	$ (14,000)
Loans and Leases Receivable, Net Amount	14,702,000	250,000
Contractual Payments at Acquisition [Abstract]
Financing Receivable, Net	15,623,000	259,000	8,086,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Accretion	910,000		1,200,000
Construction Loans [Member]
Carrying Amount [Abstract]
Loans Receivable, Net	50,619,000	107,594,000
Construction Loans [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Carrying Amount [Abstract]
Loans Receivable, Net	2,872,000	0
1-4 Family residential properties
Carrying Amount [Abstract]
Loans Receivable, Net	373,518,000	293,667,000
1-4 Family residential properties | Financial Asset Acquired with Credit Deterioration [Member]
Carrying Amount [Abstract]
Loans Receivable, Net	2,206,000	0
Multifamily residential properties
Carrying Amount [Abstract]
Loans Receivable, Net	184,051,000	61,798,000
Multifamily residential properties | Financial Asset Acquired with Credit Deterioration [Member]
Carrying Amount [Abstract]
Loans Receivable, Net	3,891,000	0
Commercial real estate
Carrying Amount [Abstract]
Loans Receivable, Net	906,850,000	681,757,000
Commercial real estate | Financial Asset Acquired with Credit Deterioration [Member]
Carrying Amount [Abstract]
Loans Receivable, Net	6,946,000	251,000
Loans secured by real estate
Carrying Amount [Abstract]
Loans Receivable, Net	1,746,738,000	1,271,999,000
Loans secured by real estate | Financial Asset Acquired with Credit Deterioration [Member]
Carrying Amount [Abstract]
Loans Receivable, Net	15,915,000	251,000
Agricultural Loans [Member]
Carrying Amount [Abstract]
Loans Receivable, Net	135,877,000	86,631,000
Agricultural Loans [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Carrying Amount [Abstract]
Loans Receivable, Net	4,000	0
Commercial and industrial loans
Carrying Amount [Abstract]
Loans Receivable, Net	557,011,000	444,263,000
Commercial and industrial loans | Financial Asset Acquired with Credit Deterioration [Member]
Carrying Amount [Abstract]
Loans Receivable, Net	15,000	8,000
Consumer Loan [Member]
Carrying Amount [Abstract]
Loans Receivable, Net	91,516,000	29,749,000
Consumer Loan [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Carrying Amount [Abstract]
Loans Receivable, Net	3,000	0
Financing Receivable, Allowance for Credit Losses	0	0	0
Contractual Payments at Acquisition [Abstract]
Financing Receivable, Net	$ 3,000	$ 0	$ 0
First BancTrust [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Contractual Payments at Acquisition [Abstract]
Business Combination, Acquired Receivables, Gross Contractual Amount					$ 20,357,000
Certain Loans Acquired In A Transfer. Nonaccretable Difference					(4,231,000)
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, Cash Flows Expected to be Collected at Acquisition					16,126,000
Certain Loans Acquired in Transfer, Accretable Yield					0
Business Combination, Acquired Receivable, Fair Value					$ 16,126,000
SCB Bancorp [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Contractual Payments at Acquisition [Abstract]
Business Combination, Acquired Receivables, Gross Contractual Amount				$ 3,282,000
Certain Loans Acquired In A Transfer. Nonaccretable Difference				(688,000)
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, Cash Flows Expected to be Collected at Acquisition				2,594,000
Certain Loans Acquired in Transfer, Accretable Yield				0
Business Combination, Acquired Receivable, Fair Value				$ 2,594,000

Premises and Equipment, Net (De

Premises and Equipment, Net (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 90,482	$ 67,445
Accumulated depreciation and amortization	31,365	29,179
Total	59,117	38,266
Depreciation Expense	3,011	2,655	$ 2,495
Land
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	14,734	9,933
Buildings and improvements
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	52,129	37,229
Furniture and equipment
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	19,718	16,145
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	3,580	4,109
Construction in progress
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 321	$ 29

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Dec. 31, 2018	Jun. 30, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Goodwill and Intangible Assets Gross Carrying Value [Abstract]
Goodwill not subject to amortization	$ 109,037		$ 109,037	$ 63,910
Intangibles from branch acquisition	3,015		3,015	3,015
Core deposit intangibles	32,355		32,355	19,862
Customer list intangibles	16,029		16,029	3,731
Total Goodwill and Intangible Assets, Gross Carrying Value	160,436		160,436	90,518
Goodwill and Intangible Assets Accumulated Amortization [Abstract]
Goodwill not subject to amortization (effective 1/1/02), Accumulated Amortization	3,760		3,760	3,760
Total Goodwill and Intangible Assets, Accumulated Amortization	23,440		23,440	20,533
Total Amortization Expense [Abstract]
Amortization of intangible assets			3,215	2,153	$ 1,909
Estimated amortization expense [Abstract]
For year ended 12/31/19	5,355		5,355
For year ended 12/31/20	4,644		4,644
For year ended 12/31/21	3,996		3,996
For year ended 12/31/22	3,630		3,630
For year ended 12/31/23	3,318		3,318
Goodwill, Acquired During Period	18,636
First BancTrust [Member]
Estimated amortization expense [Abstract]
Goodwill, Acquired During Period		$ 26,491	26,500
Intangibles from branch acquisitions
Goodwill and Intangible Assets Accumulated Amortization [Abstract]
Intangible Assets, Accumulated Amortization	3,015		3,015	3,015
Core deposit intangibles
Goodwill and Intangible Assets Accumulated Amortization [Abstract]
Intangible Assets, Accumulated Amortization	14,017		14,017	11,473
Total Amortization Expense [Abstract]
Amortization of intangible assets			2,544	1,829	1,628
Customer list intangibles
Goodwill and Intangible Assets Accumulated Amortization [Abstract]
Intangible Assets, Accumulated Amortization	$ 2,648		2,648	2,285
Total Amortization Expense [Abstract]
Amortization of intangible assets			363	183	183
Mortgage Servicing Rights [Member]
Total Amortization Expense [Abstract]
Amortization of intangible assets			$ 308	$ 141	$ 98

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets Reconciliation of purchase price to goodwill recorded (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Dec. 31, 2018	Jun. 30, 2017	Dec. 31, 2018	Nov. 15, 2018	May 01, 2018
Reconciliation of purchase price to goodwill recorded [Line Items]
Goodwill, Acquired During Period	$ 18,636
First BancTrust [Member]
Reconciliation of purchase price to goodwill recorded [Line Items]
Business Combination, Purchase Price					$ 26,946
Fair value of securities					59,586
Fair value of OREO					535
Fair value of premises and equipment					(9,437)
Business Combination, Recognized Identifiable Assets and Liabilities Assumed, Loans					363,281
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposits					(385,624)
Fair value of FHLB advances					(30,672)
Fair value of subordinated debentures					(4,735)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill					(5,224)
Business Combination, Net Fair Value Adjustments					(455)
Goodwill Provisionally Recorded					27,400
Goodwill, Acquired During Period		$ 26,491	$ 26,500
SCB Bancorp [Member]
Reconciliation of purchase price to goodwill recorded [Line Items]
Business Combination, Purchase Price				$ 22,104
Fair value of securities				97,504
Fair value of OREO				438
Fair value of premises and equipment				(11,343)
Business Combination, Recognized Identifiable Assets and Liabilities Assumed, Loans				247,561
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposits				(347,971)
Fair value of FHLB advances				(18,971)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles				(12,298)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill				(7,269)
Business Combination, Net Fair Value Adjustments				(3,468)
Goodwill, Acquired During Period			$ 18,600
Fair Value Adjustments [Member] | First BancTrust [Member]
Reconciliation of purchase price to goodwill recorded [Line Items]
Fair value of securities					320
Fair value of loans					3,463
Fair value of OREO					12
Business Combination, Recognized Identifiable Assets and Liabilities Assumed, Mortgage Servicing Rights					(1,097)
Fair value of premises and equipment					689
Business Combination, Recognized Identifiable Assets and Liabilities Assumed, Loans					7,875
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposits					(1,301)
Fair value of FHLB advances					328
Fair value of subordinated debentures					(1,451)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles					(5,224)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill					(5,224)
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed, Other Assets, Net					$ 1,860
Fair Value Adjustments [Member] | SCB Bancorp [Member]
Reconciliation of purchase price to goodwill recorded [Line Items]
Fair value of securities				41
Fair value of loans				3,377
Fair value of OREO				345
Fair value of premises and equipment				(1,228)
Business Combination, Recognized Identifiable Assets and Liabilities Assumed, Loans				7,868
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposits				(343)
Fair value of FHLB advances				(29)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles				(11,070)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill				(7,269)
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed, Other Assets, Net				$ 13,936

Goodwill and Intangible Asset_4

Goodwill and Intangible Assets Mortgage Servicing Rights (Details) - USD ($)	3 Months Ended	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets		$ (3,215,000)	$ (2,153,000)	$ (1,909,000)
Mortgage Servicing Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired	$ 1,558,000	1,558,000	0
Capitalization Of Mortgage Servicing Rights		7,000	0
Amortization of intangible assets		(308,000)	(141,000)	(98,000)
Finite-Lived Intangible Assets, Net	$ 844,000	$ 2,101,000	$ 844,000	$ 985,000

Deposits (Details)

Deposits (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Deposits, by Type [Abstract]
Noninterest-bearing Deposit Liabilities	$ 575,784	$ 480,283
Interest-bearing Domestic Deposit, Demand	903,426	700,376
Interest-bearing Domestic Deposit, Savings	432,319	359,065
Interest-bearing Domestic Deposit, Money Market	485,388	390,880
Interest-bearing Domestic Deposit, Time Deposits	591,769	344,035
Total deposits	2,988,686	2,274,639
Time Deposits, $100,000 or More	87,517	52,598	$ 55,768
Maturities of Time Deposits [Abstract]
Time Deposit Maturities, Next Twelve Months	318,879
Time Deposit Maturities, Year Two	185,814
Time Deposit Maturities, Year Three	48,953
Time Deposit Maturities, Year Four	21,714
Time Deposit Maturities, Year Five	14,976
Time Deposit Maturities, after Year Five	1,433
Time Deposits	591,769
Total of Public entitiy balances	$ 94,800	$ 100,828

Deposits Deposit Interest Compo

Deposits Deposit Interest Components (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Deposits [Abstract]
Interest-bearing demand	$ 1,158	$ 588	$ 274
Savings	579	486	445
Money market	2,135	1,224	719
Time deposits	4,699	1,697	1,275
Total	$ 8,571	$ 3,995	$ 2,713

Borrowings Schedule of Borrowin

Borrowings Schedule of Borrowings (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Schedule of Borrowings [Line Items]
Long-term Debt	$ 7,724	$ 10,313
Advances from Federal Home Loan Banks	119,745	60,038
Junior subordinated debentures	29,000	24,000
Short Term and Long Term Borrowings	348,799	249,739
Securities Sold under Agreements to Repurchase [Member]
Schedule of Borrowings [Line Items]
Short-term Debt	$ 192,330	$ 155,388

FHLB Advances (Details)

FHLB Advances (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Advances from Federal Home Loan Banks	$ 119,745	$ 60,038
Maturities of Long-term Debt [Abstract]
Long-term Debt	7,724	10,313
Junior Subordinated Debenture Owed to Unconsolidated Subsidiary Trust	29,000	$ 24,000
FHLB Advances [Member]
Maturities of Long-term Debt [Abstract]
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months	56,000
Long-term Debt, Maturities, Repayments of Principal in Year Two	39,000
Long-term Debt, Maturities, Repayments of Principal in Year Three	15,000
Long-term Debt, Maturities, Repayments of Principal in Year Four	5,000
Long-term Debt, Maturities, Repayments of Principal in Year Five	5,000
Long-term Debt, Maturities, Repayments of Principal after Year Five	0
Long-term Debt	120,000
Debt Instrument, Unamortized Discount (Premium), Net	(255)
Subordinated Debt [Member]
Maturities of Long-term Debt [Abstract]
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months	0
Long-term Debt, Maturities, Repayments of Principal in Year Two	0
Long-term Debt, Maturities, Repayments of Principal in Year Three	0
Long-term Debt, Maturities, Repayments of Principal in Year Four	0
Long-term Debt, Maturities, Repayments of Principal in Year Five	0
Long-term Debt, Maturities, Repayments of Principal after Year Five	30,930
Long-term Debt	30,930
Debt Instrument, Unamortized Discount (Premium), Net	$ (1,930)
FHLB advance, 3-Year Maturity [Member]
Debt Instrument [Line Items]
Federal Home Loan Bank Advances, Original Maturity Term	3-year
Federal Home Loan Bank Advances Interest Rate	1.72%
Advances from Federal Home Loan Banks	$ 4,000
FHLB Advance, 6-Month Original Maturity [Member]
Debt Instrument [Line Items]
Federal Home Loan Bank Advances, Original Maturity Term	6-month
Federal Home Loan Bank Advances Interest Rate	2.68%
Advances from Federal Home Loan Banks	$ 15,000
FHLB advance, 2-Year Maturity [Member]
Debt Instrument [Line Items]
Federal Home Loan Bank Advances, Original Maturity Term	2-year
Federal Home Loan Bank Advances Interest Rate	2.75%
Advances from Federal Home Loan Banks	$ 5,000
FHLB advance, 3-Year Original Maturity 2 [Member]
Debt Instrument [Line Items]
Federal Home Loan Bank Advances, Original Maturity Term	3-year
Federal Home Loan Bank Advances Interest Rate	2.40%
Advances from Federal Home Loan Banks	$ 4,000
FHLB Advance 3 Year Original Maturity 3 [Member]
Debt Instrument [Line Items]
Federal Home Loan Bank Advances, Original Maturity Term	3-year
Federal Home Loan Bank Advances Interest Rate	1.75%
Advances from Federal Home Loan Banks	$ 5,000
FHLB Advance 2.5 Year Original Maturity [Member]
Debt Instrument [Line Items]
Federal Home Loan Bank Advances, Original Maturity Term	2.5-year
Federal Home Loan Bank Advances Interest Rate	1.67%
Advances from Federal Home Loan Banks	$ 5,000
FHLB Advance 4-Year Original Maturity [Member]
Debt Instrument [Line Items]
Federal Home Loan Bank Advances, Original Maturity Term	4-year
Federal Home Loan Bank Advances Interest Rate	1.79%
Advances from Federal Home Loan Banks	$ 5,000
FHLB Advance 1.5-Year Original Maturity 2 [Member]
Debt Instrument [Line Items]
Federal Home Loan Bank Advances, Original Maturity Term	1.5 year
Federal Home Loan Bank Advances Interest Rate	2.95%
Advances from Federal Home Loan Banks	$ 10,000
FHLB Advance, 2-Year Original Maturity 2 [Member]
Debt Instrument [Line Items]
Federal Home Loan Bank Advances, Original Maturity Term	2-year
Federal Home Loan Bank Advances Interest Rate	1.56%
Advances from Federal Home Loan Banks	$ 5,000
FHLB Advance, 11-Month Original Maturity [Member]
Debt Instrument [Line Items]
Federal Home Loan Bank Advances, Original Maturity Term	11-month
Federal Home Loan Bank Advances Interest Rate	2.81%
Advances from Federal Home Loan Banks	$ 10,000
FHLB Advance 15-Month Original Maturity [Member]
Debt Instrument [Line Items]
Federal Home Loan Bank Advances, Original Maturity Term	15-month
Federal Home Loan Bank Advances Interest Rate	2.63%
Advances from Federal Home Loan Banks	$ 5,000
FHLB Advance 5-Year Original Maturity [Member]
Debt Instrument [Line Items]
Federal Home Loan Bank Advances, Original Maturity Term	5-year
Federal Home Loan Bank Advances Interest Rate	1.89%
Advances from Federal Home Loan Banks	$ 2,000
FHLB Advance, 14-Month Original Maturity [Member]
Debt Instrument [Line Items]
Federal Home Loan Bank Advances, Original Maturity Term	14-month
Federal Home Loan Bank Advances Interest Rate	2.88%
Advances from Federal Home Loan Banks	$ 10,000
FHLB Advance, 1.5-Year Original Maturity [Member]
Debt Instrument [Line Items]
Federal Home Loan Bank Advances, Original Maturity Term	1.5-year
Federal Home Loan Bank Advances Interest Rate	2.67%
Advances from Federal Home Loan Banks	$ 5,000
FHLB advance, 6-Year Maturity [Member]
Debt Instrument [Line Items]
Federal Home Loan Bank Advances, Original Maturity Term	6-year
Federal Home Loan Bank Advances Interest Rate	2.30%
Advances from Federal Home Loan Banks	$ 5,000
FHLB Advance 3.5 Year Original Maturity [Member]
Debt Instrument [Line Items]
Federal Home Loan Bank Advances, Original Maturity Term	3.5-year
Federal Home Loan Bank Advances Interest Rate	1.83%
Advances from Federal Home Loan Banks	$ 5,000
FHLB Advance 5-Year Original Maturity 2 [Member]
Debt Instrument [Line Items]
Federal Home Loan Bank Advances, Original Maturity Term	5-year
Federal Home Loan Bank Advances Interest Rate	1.85%
Advances from Federal Home Loan Banks	$ 5,000
FHLB Advance, 7 Year Maturity [Member]
Debt Instrument [Line Items]
Federal Home Loan Bank Advances, Original Maturity Term	7-year
Federal Home Loan Bank Advances Interest Rate	2.55%
Advances from Federal Home Loan Banks	$ 5,000
FHLB Advance 5-Year Original Maturity 3 [Member]
Debt Instrument [Line Items]
Federal Home Loan Bank Advances, Original Maturity Term	5-year
Federal Home Loan Bank Advances Interest Rate	2.71%
Advances from Federal Home Loan Banks	$ 5,000
FHLB advance, 8-Year Maturity [Member]
Debt Instrument [Line Items]
Federal Home Loan Bank Advances, Original Maturity Term	8-year
Federal Home Loan Bank Advances Interest Rate	2.40%
Advances from Federal Home Loan Banks	$ 5,000

Borrowings Repurchase Agreement

Borrowings Repurchase Agreements and Other Borrowings (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Short-term Debt [Line Items]
Securities Sold Under Agreements to Repurchase Weighted Average Rate	0.15%
Securities Sold under Agreements to Repurchase	$ 192,330	$ 155,388
Securities Sold under Agreements to Repurchase Increase (Decrease)	36,900
Securities Sold under Agreements to Repurchase [Member]
Short-term Debt [Line Items]
Maximum outstanding at any month-end	192,330	163,626	$ 185,763
Average amount outstanding for the year	$ 140,622	$ 144,674	$ 129,734

Borrowings Securities Sold unde

Borrowings Securities Sold under Agreement to Repurchase (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Short-term Debt [Line Items]
Securities Sold under Agreements to Repurchase	$ 192,330	$ 155,388
U.S. Treasury securities and obligations of U.S. government corporations & agencies
Short-term Debt [Line Items]
Securities Sold under Agreements to Repurchase	130,893	100,895
Mortgage-backed securities
Short-term Debt [Line Items]
Securities Sold under Agreements to Repurchase	$ 61,437	$ 54,493

Borrowings Debt (Details)

Borrowings Debt (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Sep. 07, 2016
Line of Credit Facility [Line Items]
Long Term Debt, Original Debt, Amount			$ 15,000
Long-term Debt	$ 7,724	$ 10,313
Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 10,000
Line of Credit Facility, Interest Rate Spread	2.25%
Long-term Debt [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Interest Rate at Period End	4.65%	3.67%
Line of Credit Facility, Interest Rate Spread	2.25%

Borrowings Subordinated Debentu

Borrowings Subordinated Debentures (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	May 01, 2018	Dec. 31, 2017	Sep. 08, 2016	Apr. 26, 2006	Feb. 27, 2004
Debt Instrument [Line Items]
Junior subordinated debentures	$ 29,000		$ 24,000
FMIS Trust I [Member]
Debt Instrument [Line Items]
Trust preferred securities issued						$ 10,000
Investment in Statutory Trust						$ 310
Junior subordinated debentures	10,310
FMIS Trust II [Member]
Debt Instrument [Line Items]
Trust preferred securities issued					$ 10,000
Investment in Statutory Trust					$ 310
Junior subordinated debentures	$ 10,310
CLS Trust I [Member]
Debt Instrument [Line Items]
Trust preferred securities issued				$ 4,000
Investment in Statutory Trust				$ 124
FBTCST I [Member]
Debt Instrument [Line Items]
Trust preferred securities issued		$ 6,000
Investment in Statutory Trust		$ 186
Junior Subordinated Debt [Member] | FMIS Trust I [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate Terms	three-month London Interbank Offered Rate (“LIBOR”) plus 280 basis points
Debt Instrument, Interest Rate at Period End	5.19%		4.21%
Junior Subordinated Debt [Member] | FMIS Trust II [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate Terms	bore interest at a fixed rate of 6.98% paid quarterly until June 15, 2011 and then converted to floating rate (LIBOR plus 160 basis points) after June 15, 2011
Debt Instrument, Interest Rate at Period End	4.388%		3.19%
Junior Subordinated Debt [Member] | CLS Trust I [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate Terms	bear interest at three-month LIBOR plus 185 basis points
Debt Instrument, Interest Rate at Period End	4.638%		3.438%
Junior Subordinated Debt [Member] | FBTCST I [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate Terms	bear interest at three-month LIBOR plus 170 basis points
Debt Instrument, Interest Rate at Period End	4.488%		3.29%

Regulatory Capital (Details)

Regulatory Capital (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Phantom section (for regulatory ratios):
Capital ($)	$ 412,879	$ 290,843
Capital to RWA (%)	13.63%	12.70%
Capital Required for Capital Adequacy ($)	$ 299,148	$ 211,848
Capital Required for Capital Adequacy to RWA (%)	9.875%	9.25%
Tier One Risk Based Capital ($)	$ 386,690	$ 270,866
Tier One Risk Based Capital to RWA (%)	12.76%	11.83%
Tier One Risk Based Capital Required for Capital Adequacy ($)	$ 238,561	$ 166,043
Tier One Risk Based Capital Required for Capital Adequacy to RWA (%)	7.875%	7.25%
Common Equity Tier One Risk Based Capital ($)	$ 357,690	$ 246,866
Common Equity Tier One Risk Based Capital To RWA (%)	11.81%	10.78%
Common Equity Tier One Risk Based Capital Required For Capital Adequacy ($)	$ 193,121	$ 131,690
Common Equity Tier One Risk Based Capital Required for Capital Adequacy to RWA (%)	6.375%	5.75%
Tier One Leverage Capital to Average Assets (%)	11.15%	9.91%
Tier One Leverage Capital Required for Capital Adequacy ($)	$ 138,765	$ 109,381
Tier One Leverage Capital Required for Capital Adequacy to Average Assets (%)	4.00%	4.00%
Description of Regulatory Requirements, Capital Adequacy Purposes	Quantitative measures established by each regulatory capital standards to ensure capital adequacy require the Company and its subsidiary bank to maintain a minimum capital amounts and ratios (set forth in the table below).
First Clover Leaf [Member]
Phantom section (for regulatory ratios):
Capital ($)	$ 45,387
Capital to RWA (%)	14.33%
Capital Required for Capital Adequacy ($)	$ 31,283
Capital Required for Capital Adequacy to RWA (%)
Capital Required to be Well Capitalized ($)	31,679
Capital Required to be Well Capitalized to RWA (%)
Tier One Risk Based Capital ($)	$ 45,387
Tier One Risk Based Capital to RWA (%)	14.33%
Tier One Risk Based Capital Required for Capital Adequacy ($)	$ 24,947
Tier One Risk Based Capital Required for Capital Adequacy to RWA (%)
Tier One Risk Based Capital Required to be Well Capitalized ($)	25,343
Tier One Risk Based Capital Required to be Well Capitalized to RWA (%)
Common Equity Tier One Risk Based Capital ($)	$ 45,387
Common Equity Tier One Risk Based Capital To RWA (%)	14.33%
Common Equity Tier One Risk Based Capital Required For Capital Adequacy ($)	$ 20,195
Common Equity Tier One Risk Based Capital Required for Capital Adequacy to RWA (%)
Common Equity Tier One Risk Based Capital Required to Be Well Capitalized ($)	$ 20,591
Common Equity Tier One Risk Based Capital Required To Be Well Capitalized to RiWA (%)
Tier One Leverage Capital to Average Assets (%)	11.12%
Tier One Leverage Capital Required for Capital Adequacy ($)	$ 16,322
Tier One Leverage Capital Required for Capital Adequacy to Average Assets (%)
Tier One Leverage Capital Required to be Well Capitalized ($)	20,403
Tier One Leverage Capital Required to be Well Capitalized to Average Assets (%)
First Mid Bank [Member]
Phantom section (for regulatory ratios):
Capital ($)	$ 350,361	$ 282,621
Capital to RWA (%)	12.85%	12.39%
Capital Required for Capital Adequacy ($)	$ 269,171	$ 211,064
Capital Required for Capital Adequacy to RWA (%)	9.875%	9.25%
Capital Required to be Well Capitalized ($)	$ 272,578	$ 228,177
Capital Required to be Well Capitalized to RWA (%)	10.00%	10.00%
Tier One Risk Based Capital ($)	$ 324,172	$ 262,644
Tier One Risk Based Capital to RWA (%)	11.89%	11.51%
Tier One Risk Based Capital Required for Capital Adequacy ($)	$ 214,655	$ 165,428
Tier One Risk Based Capital Required for Capital Adequacy to RWA (%)	7.875%	7.25%
Tier One Risk Based Capital Required to be Well Capitalized ($)	$ 218,063	$ 182,542
Tier One Risk Based Capital Required to be Well Capitalized to RWA (%)	8.00%	8.00%
Common Equity Tier One Risk Based Capital ($)	$ 324,172	$ 262,644
Common Equity Tier One Risk Based Capital To RWA (%)	11.89%	11.51%
Common Equity Tier One Risk Based Capital Required For Capital Adequacy ($)	$ 173,769	$ 131,202
Common Equity Tier One Risk Based Capital Required for Capital Adequacy to RWA (%)	6.375%	5.75%
Common Equity Tier One Risk Based Capital Required to Be Well Capitalized ($)	$ 177,176	$ 148,315
Common Equity Tier One Risk Based Capital Required To Be Well Capitalized to RiWA (%)	6.50%	6.50%
Tier One Leverage Capital to Average Assets (%)	9.92%	9.63%
Tier One Leverage Capital Required for Capital Adequacy ($)	$ 130,716	$ 109,113
Tier One Leverage Capital Required for Capital Adequacy to Average Assets (%)	4.00%	4.00%
Tier One Leverage Capital Required to be Well Capitalized ($)	$ 163,396	$ 136,392
Tier One Leverage Capital Required to be Well Capitalized to Average Assets (%)	5.00%	5.00%

Disclosures of Fair Values of_3

Disclosures of Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Available-for-sale: [Abstract]
Total available-for-sale securities	$ 692,274	$ 578,579
Impaired Loans Receivable [Abstract]
Carrying amount of loans with a specific allowance		3,665
Fair value of loans with a specific allowance		3,053
Specific Allowance		612
Fair Value, Measurements, Recurring [Member]
Available-for-sale: [Abstract]
Total available-for-sale securities	692,274	578,579
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1)
Available-for-sale: [Abstract]
Total available-for-sale securities	364	172
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2)
Available-for-sale: [Abstract]
Total available-for-sale securities	690,943	575,859
Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3)
Available-for-sale: [Abstract]
Total available-for-sale securities	967	2,548
Fair Value, Measurements, Nonrecurring [Member]
Impaired Loans Receivable [Abstract]
Carrying amount of loans with a specific allowance	19,481
Fair value of loans with a specific allowance	16,437
Specific Allowance	3,044
U.S. Treasury securities and obligations of U.S. government corporations & agencies
Available-for-sale: [Abstract]
Total available-for-sale securities	198,649	113,770
U.S. Treasury securities and obligations of U.S. government corporations & agencies | Fair Value, Measurements, Recurring [Member]
Available-for-sale: [Abstract]
Total available-for-sale securities	198,649	113,770
U.S. Treasury securities and obligations of U.S. government corporations & agencies | Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1)
Available-for-sale: [Abstract]
Total available-for-sale securities	0	0
U.S. Treasury securities and obligations of U.S. government corporations & agencies | Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2)
Available-for-sale: [Abstract]
Total available-for-sale securities	198,649	113,770
U.S. Treasury securities and obligations of U.S. government corporations & agencies | Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3)
Available-for-sale: [Abstract]
Total available-for-sale securities	0	0
Obligations of states and political subdivisions
Available-for-sale: [Abstract]
Total available-for-sale securities	192,579	166,266
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	0	0
Transfers into Level 3	967	0
Transfers out of Level 3	0	0
Total gains or losses [Abstract]
Included in net income	0	0
Included in other comprehensive income (loss)	0	0
Purchases, issuances, sales and settlements [Abstract]
Purchases	0	0
Issuances	0	0
Sales	0	0
Settlements	0	0
Ending balance	967	0
Total gains or losses for the period included in net income attributable to the change in unrealized gains or losses related to assets and liabilities still held at the reporting date	0	0
Obligations of states and political subdivisions | Fair Value, Measurements, Recurring [Member]
Available-for-sale: [Abstract]
Total available-for-sale securities	192,579	166,266
Obligations of states and political subdivisions | Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1)
Available-for-sale: [Abstract]
Total available-for-sale securities	0	0
Obligations of states and political subdivisions | Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2)
Available-for-sale: [Abstract]
Total available-for-sale securities	191,612	166,266
Obligations of states and political subdivisions | Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3)
Available-for-sale: [Abstract]
Total available-for-sale securities	967	0
Residential Mortgage Backed Securities [Member]
Available-for-sale: [Abstract]
Total available-for-sale securities	298,672	293,811
Residential Mortgage Backed Securities [Member] | Fair Value, Measurements, Recurring [Member]
Available-for-sale: [Abstract]
Total available-for-sale securities	298,672	293,811
Residential Mortgage Backed Securities [Member] | Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1)
Available-for-sale: [Abstract]
Total available-for-sale securities	0	0
Residential Mortgage Backed Securities [Member] | Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2)
Available-for-sale: [Abstract]
Total available-for-sale securities	298,672	293,811
Residential Mortgage Backed Securities [Member] | Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3)
Available-for-sale: [Abstract]
Total available-for-sale securities	0	0
Trust preferred securities
Available-for-sale: [Abstract]
Total available-for-sale securities		2,548
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	2,548	1,652
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Total gains or losses [Abstract]
Included in net income	0	0
Included in other comprehensive income (loss)	18	1,053
Purchases, issuances, sales and settlements [Abstract]
Purchases	0	0
Issuances	0	0
Sales	(2,522)	0
Settlements	(44)	(157)
Ending balance	0	2,548
Total gains or losses for the period included in net income attributable to the change in unrealized gains or losses related to assets and liabilities still held at the reporting date	0	0
Trust preferred securities | Fair Value, Measurements, Recurring [Member]
Available-for-sale: [Abstract]
Total available-for-sale securities		2,548
Trust preferred securities | Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1)
Available-for-sale: [Abstract]
Total available-for-sale securities		0
Trust preferred securities | Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2)
Available-for-sale: [Abstract]
Total available-for-sale securities		0
Trust preferred securities | Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3)
Available-for-sale: [Abstract]
Total available-for-sale securities		2,548
Other securities
Available-for-sale: [Abstract]
Total available-for-sale securities	2,374	2,184
Other securities | Fair Value, Measurements, Recurring [Member]
Available-for-sale: [Abstract]
Total available-for-sale securities	2,374	2,184
Other securities | Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1)
Available-for-sale: [Abstract]
Total available-for-sale securities	364	172
Other securities | Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2)
Available-for-sale: [Abstract]
Total available-for-sale securities	2,010	2,012
Other securities | Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3)
Available-for-sale: [Abstract]
Total available-for-sale securities	$ 0	$ 0

Disclosures of Fair Values of_4

Disclosures of Fair Values of Financial Instruments, Part II (Details) - USD ($)		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017
Foreclosed Assets Held for Sale [Abstract]
Other real estate owned		$ 2,534,000	$ 2,754,000
Financial Assets [Abstract]
Available-for-sale securities		692,274,000	578,579,000
Debt Securities, Held-to-maturity		69,436,000	69,332,000
Debt Securities, Held-to-maturity, Fair Value		67,909,000	68,457,000
Other borrowings		7,724,000	10,313,000
Carrying Amount
Financial Assets [Abstract]
Cash and due from banks		140,735,000	88,388,000
Federal funds sold		665,000	491,000
Certificates of deposit investments		7,569,000	1,685,000
Available-for-sale securities		692,274,000	578,579,000
Debt Securities, Held-to-maturity		69,436,000
Debt Securities, Held-to-maturity, Fair Value			69,332,000
Loans held for sale		1,508,000	1,025,000
Loans net of allowance for loan losses		2,616,822,000	1,918,499,000
Interest receivable		16,881,000	10,832,000
Federal Reserve Bank stock		7,390,000	5,160,000
Federal Home Loan Bank stock		3,095,000	2,407,000
Deposits		2,988,686,000	2,274,639,000
Securities sold under agreements to repurchase		192,330,000	155,388,000
Interest payable		1,758,000	602,000
Federal Home Loan Bank borrowings		119,745,000	60,038,000
Long-term Debt, Fair Value			10,313,000
Other borrowings		7,724,000
Junior subordinated debentures		29,000,000	24,000,000
Fair Value
Financial Assets [Abstract]
Cash and due from banks		140,735,000	88,388,000
Federal funds sold		665,000	491,000
Certificates of deposit investments		7,569,000	1,692,000
Available-for-sale securities		692,274,000	578,579,000
Debt Securities, Held-to-maturity, Fair Value		67,909,000	68,457,000
Loans held for sale		1,508,000	1,025,000
Loans net of allowance for loan losses		2,541,037,000	1,899,678,000
Interest receivable		16,881,000	10,832,000
Federal Reserve Bank stock		7,390,000	5,160,000
Federal Home Loan Bank stock		3,095,000	2,407,000
Deposits		2,991,177,000	2,272,868,000
Securities sold under agreements to repurchase		192,179,000	155,394,000
Interest payable		1,758,000	602,000
Federal Home Loan Bank borrowings		119,704,000	59,968,000
Long-term Debt, Fair Value			10,313,000
Other borrowings		7,724,000
Junior subordinated debentures		24,418,000	18,050,000
Fair Value, Measurements, Nonrecurring [Member] | Carrying Amount
Foreclosed Assets Held for Sale [Abstract]
Other real estate owned		2,534,000	2,754,000
Fair Value, Measurements, Nonrecurring [Member] | Fair Value
Foreclosed Assets Held for Sale [Abstract]
Other real estate owned		836,000	91,000
Fair Value, Inputs, Level 1 [Member]
Financial Assets [Abstract]
Cash and due from banks		140,735,000	88,388,000
Federal funds sold		665,000	491,000
Certificates of deposit investments		0	0
Available-for-sale securities		364,000	172,000
Loans held for sale		0	0
Loans net of allowance for loan losses		0	0
Interest receivable		0	0
Federal Reserve Bank stock		0	0
Federal Home Loan Bank stock		0	0
Deposits		0	0
Securities sold under agreements to repurchase		0	0
Interest payable		0	0
Federal Home Loan Bank borrowings		0	0
Long-term Debt, Fair Value			0
Other borrowings		0
Junior subordinated debentures		0	0
Fair Value, Inputs, Level 2 [Member]
Financial Assets [Abstract]
Cash and due from banks		0	0
Federal funds sold		0	0
Certificates of deposit investments		7,569,000	1,692,000
Available-for-sale securities		690,943,000	575,859,000
Debt Securities, Held-to-maturity, Fair Value		67,909,000	68,457,000
Loans held for sale		1,508,000	1,025,000
Loans net of allowance for loan losses		0	0
Interest receivable		16,881,000	10,832,000
Federal Reserve Bank stock		7,390,000	5,160,000
Federal Home Loan Bank stock		3,095,000	2,407,000
Deposits		2,396,917,000	1,930,604,000
Securities sold under agreements to repurchase		192,179,000	155,394,000
Interest payable		1,758,000	602,000
Federal Home Loan Bank borrowings		119,704,000	59,968,000
Long-term Debt, Fair Value			10,313,000
Other borrowings		7,724,000
Junior subordinated debentures		24,418,000	18,050,000
Fair Value, Inputs, Level 3 [Member]
Financial Assets [Abstract]
Cash and due from banks		0	0
Federal funds sold		0	0
Certificates of deposit investments		0	0
Available-for-sale securities		967,000	2,548,000
Loans held for sale		0	0
Loans net of allowance for loan losses		2,541,037,000	1,899,678,000
Interest receivable		0	0
Federal Reserve Bank stock		0	0
Federal Home Loan Bank stock		0	0
Deposits		594,260,000	342,264,000
Securities sold under agreements to repurchase		0	0
Interest payable		0	0
Federal Home Loan Bank borrowings		0	0
Long-term Debt, Fair Value			0
Other borrowings		0
Junior subordinated debentures		0	0
Trust preferred securities | Fair Value, Measurements, Recurring [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets, Fair Value Disclosure			$ 2,548,000
Trust preferred securities | Fair Value, Inputs, Level 3 [Member] | Discounted Cash Flow [Member]
Assets Measured On Recurring And Nonrecurring Basis Valuation Techniques [Abstract]
Constant prepayment rate (in hundredths)	[1]		1.30%
Trust preferred securities | Fair Value, Inputs, Level 3 [Member] | Minimum [Member] | Discounted Cash Flow [Member]
Assets Measured On Recurring And Nonrecurring Basis Valuation Techniques [Abstract]
Discount rate (in hundredths)			12.70%
Cumulative projected prepayments (in hundredths)			21.60%
Probability of default (in hundredths)			0.50%
Projected cures given deferral (in hundredths)			0.00%
Loss severity			97.70%
Trust preferred securities | Fair Value, Inputs, Level 3 [Member] | Maximum [Member] | Discounted Cash Flow [Member]
Assets Measured On Recurring And Nonrecurring Basis Valuation Techniques [Abstract]
Discount rate (in hundredths)
Cumulative projected prepayments (in hundredths)
Probability of default (in hundredths)
Projected cures given deferral (in hundredths)
Loss severity
Trust preferred securities | Fair Value, Inputs, Level 3 [Member] | Weighted Average [Member] | Discounted Cash Flow [Member]
Assets Measured On Recurring And Nonrecurring Basis Valuation Techniques [Abstract]
Discount rate (in hundredths)
Cumulative projected prepayments (in hundredths)
Probability of default (in hundredths)
Projected cures given deferral (in hundredths)
Loss severity
Impaired loans (collateral dependent) | Fair Value, Measurements, Nonrecurring [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets, Fair Value Disclosure		16,437,000	$ 3,053,000
Impaired loans (collateral dependent) | Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets, Fair Value Disclosure		0	0
Impaired loans (collateral dependent) | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets, Fair Value Disclosure		$ 0	$ 0
Impaired loans (collateral dependent) | Fair Value, Inputs, Level 3 [Member] | Minimum [Member] | Third Party Valuations [Member]
Assets Measured On Recurring And Nonrecurring Basis Valuation Techniques [Abstract]
Discount to reflect realizable value (in hundredths)		0.00%	0.00%
Impaired loans (collateral dependent) | Fair Value, Inputs, Level 3 [Member] | Maximum [Member] | Third Party Valuations [Member]
Assets Measured On Recurring And Nonrecurring Basis Valuation Techniques [Abstract]
Discount to reflect realizable value (in hundredths)		40.00%	40.00%
Impaired loans (collateral dependent) | Fair Value, Inputs, Level 3 [Member] | Weighted Average [Member] | Third Party Valuations [Member]
Assets Measured On Recurring And Nonrecurring Basis Valuation Techniques [Abstract]
Discount to reflect realizable value (in hundredths)		20.00%	20.00%
Impaired loans (collateral dependent) | Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets, Fair Value Disclosure		$ 16,437,000	$ 3,053,000
Foreclosed assets held for sale | Fair Value, Measurements, Nonrecurring [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets, Fair Value Disclosure		836,000	91,000
Foreclosed assets held for sale | Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets, Fair Value Disclosure		0	0
Foreclosed assets held for sale | Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets, Fair Value Disclosure		$ 0	$ 0
Foreclosed assets held for sale | Fair Value, Inputs, Level 3 [Member] | Minimum [Member] | Third Party Valuations [Member]
Assets Measured On Recurring And Nonrecurring Basis Valuation Techniques [Abstract]
Discount to reflect realizable value less estimated selling costs (in hundredths)		0.00%	0.00%
Foreclosed assets held for sale | Fair Value, Inputs, Level 3 [Member] | Maximum [Member] | Third Party Valuations [Member]
Assets Measured On Recurring And Nonrecurring Basis Valuation Techniques [Abstract]
Discount to reflect realizable value less estimated selling costs (in hundredths)		40.00%	40.00%
Foreclosed assets held for sale | Fair Value, Inputs, Level 3 [Member] | Weighted Average [Member] | Third Party Valuations [Member]
Assets Measured On Recurring And Nonrecurring Basis Valuation Techniques [Abstract]
Discount to reflect realizable value less estimated selling costs (in hundredths)		35.00%	35.00%
Foreclosed assets held for sale | Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets, Fair Value Disclosure		$ 836,000	$ 91,000
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Deferred Compensation Plan (Det

Deferred Compensation Plan (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Deferred Compensation Arrangement with Individual, Recorded Liability	$ 3,548
Shares, Issued	9,043	6,875

Stock Incentive Plan (Details)

Stock Incentive Plan (Details) - shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	149,983
Options, Grants in Period, Gross	0	0	0
RSA/RSU, Grants in Period, Gross	28,700	18,391	13,912
Stock Unit Awards and Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
RSA/RSU, Grants in Period, Gross			13,912

Stock Incentive Plan Compensati

Stock Incentive Plan Compensation Cost (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost		$ 954,000
Allocated Share-based Compensation Expense, Net of Tax	$ 248,000	620,000	$ 250,000
Stock Unit Awards and Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated Share-based Compensation Expense	314,000	954,000	384,000
Income Tax Expense (Benefit)	$ (66,000)	$ (334,000)	$ (134,000)

Stock Incentive Plan Summary of

Stock Incentive Plan Summary of Stock Option Activity (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding, beginning of year	10,500	40,500	45,500
Granted	0	0	0
Exercised	(10,500)	(27,500)	(2,500)
Forfeited or expired	0	(2,500)	(2,500)
Outstanding, end of year	0	10,500	40,500
Options, Exercisable, Number	0	10,500	40,500
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Outstanding Options, Weighted Average Exercise Price, Beginning of Year	$ 23	$ 24.65	$ 24.67
Options, Grants in Period, Weighted Average Exercise Price	0	0	0
Options, Exercises in Period, Weighted Average Exercise Price	23	25.42	24.86
Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price	0	23	24.86
Outstanding Options, Weighted Average Exercise Price, End of Year	0	23	24.65
Options, Exercisable, Weighted Average Exercise Price	$ 0	$ 23	$ 24.65
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Options, Outstanding, Weighted Average Remaining Contractual Term	0 years	350 days	1 year 153 days
Options, Exercisable, Weighted Average Remaining Contractual Term	0 years	350 days	1 year 153 days
Options, Outstanding, Intrinsic Value	$ 0	$ 163,170	$ 378,850
Options, Exercisable, Intrinsic Value	0	163,170	$ 378,850
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value	$ 176,000	$ 259,000
Antidilutive Outstanding option shares			14,000

Stock Incentive Plan Summary _2

Stock Incentive Plan Summary of Unvested Stock and Stock Units (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost		$ 954,000
Other than Options, Nonvested, Number	24,280	0	32,338	30,169
Other than Options, Nonvested, Weighted Average Grant Date Fair Value	$ 38.92	$ 0	$ 22.64	$ 20.87
RSA/RSU, Grants in Period, Gross	28,700	18,391	13,912
Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 38.92	$ 30.65	$ 26.09
Other than Options, Vested in Period	(4,420)	(50,729)	(11,743)
Other than Options, Vested in Period, Weighted Average Grant Date Fair Value	$ 38.92	$ 25.54	$ 22.18
Other than Options, Forfeited in Period	0	0	0
Other than Options, Forfeitures, Weighted Average Grant Date Fair Value	$ 0	$ 0	$ 0
Other than Options, Vested in Period, Total Fair Value	$ 172,026	$ 260,483	$ 260,483
Nonvested Awards, Total Compensation Cost Not yet Recognized, Share-based Awards Other than Options	$ 795,000	$ 0	$ 344,000
Discounted Cash Flow [Member] | Weighted Average [Member] | Significant Unobservable Inputs (Level 3) | Trust preferred securities
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Loss severity

Retirement Plans SERP (Details)

Retirement Plans SERP (Details) - Supplemental Employee Retirement Plans, Defined Benefit - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Annual Benefit Amount	$ 50,000
Year of Benefit	20 years
Defined Benefit Plan, Other Information-Number of Employees Covered	2
Defined Benefit Plan, Other Cost (Credit)	$ 36,000	$ 40,000	$ 43,000
Liability, Defined Benefit Plan	$ 533,000	$ 597,000

Retirement Plans Employee Retir

Retirement Plans Employee Retirement Plan (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Defined Benefit Plan Disclosure [Line Items]
Defined Contribution Plan, Maximum Annual Contribution Per Employee, Percent	4.00%
Defined Contribution Plan, Employer Matching Contribution, Percent	100% of the first 3% and 50% of the next 2%
Defined Contribution Plan, Cost	$ 1,881	$ 1,630	$ 1,383
Supplemental Employee Retirement Plans, Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Year of Benefit	20 years

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Federal									$ 4,841	$ 9,825	$ 11,375
State									2,781	2,719	2,953
Total Current									7,622	12,544	14,328
Federal									2,818	2,047	(1,940)
State									1,465	451	(448)
Total Deferred									4,283	2,498	(2,388)
Total	$ 3,206	$ 2,731	$ 3,105	$ 2,863	$ 4,497	$ 3,538	$ 3,927	$ 3,080	$ 11,905	$ 15,042	$ 11,940

Income Taxes Income Tax Reconci

Income Taxes Income Tax Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Effective Income Tax Rate [Line Items]
Statutory U.S. Federal Tax Rate									21.00%	35.00%
Expected income taxes									$ 10,186	$ 14,604	$ 11,823
Tax-exempt income from bank owned life insurance									283	573	235
Other tax exempt income									(1,598)	(2,223)	(1,577)
Nondeductible interest expense									43	28	21
State taxes, net of federal taxes									3,354	2,062	1,628
Other items									218	(266)	280
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount									0	1,410	0
Effect of marginal tax rate									(15)	0	0
Total	$ 3,206	$ 2,731	$ 3,105	$ 2,863	$ 4,497	$ 3,538	$ 3,927	$ 3,080	$ 11,905	$ 15,042	$ 11,940

Income Taxes Temporary Differen

Income Taxes Temporary Differences (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Effective Income Tax Rate [Line Items]
Allowance for loan losses	$ 7,251	$ 5,694
Available-for-sale investment securities	2,644	941
Deferred compensation	3,593	749
Supplemental retirement	152	170
Core deposit premium and other intangible assets	657	664
Deferred Tax Assets, Equity Method Investments	0	126
Other-than-temporary impairment on securities	0	317
Stock compensation expense	43	0
Purchase accounting	0	475
Acquisition costs	190	210
Other	977	596
Total gross deferred tax assets	15,507	9,942
Deferred loan costs	126	26
Intangibles amortization	4,135	3,685
Prepaid expenses	297	232
Deferred Tax Liabilities, Other	232	158
FHLB stock dividend	81	58
Deferred Tax Liabilities, Intangible Assets	6,066	0
Depreciation	2,149	1,207
Accumulated accretion	199	112
Mortgage servicing rights	578	240
Total gross deferred tax liabilities	13,863	5,718
Net deferred tax assets	$ 1,644	$ 4,224
Statutory U.S. Federal Tax Rate	21.00%	35.00%
Scenario, Plan [Member]
Effective Income Tax Rate [Line Items]
Statutory U.S. Federal Tax Rate	21.00%

Dividend Restrictions (Details)

Dividend Restrictions (Details) $ in Millions	Dec. 31, 2018USD ($)
First Mid Bank [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Amount Available for Dividend Distribution without Prior Approval from Regulatory Agency	$ 28.8

Commitments and Contingent Li_3

Commitments and Contingent Liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Commitments to Extend Credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Commercial real estate	$ 102,015	$ 73,268
Commercial operating	298,657	223,960
Home equity	43,026	38,318
Other	110,226	69,333
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Asset	$ 553,924	404,879
Number of expected days to fund commitments	ninety days
Financial Standby Letter of Credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Asset	$ 10,183	$ 10,626
Period when letters of credit expire	one year or less

Related Party Transactions (Det

Related Party Transactions (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Related Party Transactions [Abstract]
Beginning balance	$ 76,835,000	$ 54,502,000
New loans	24,957,000	29,725,000
Loan repayments	(7,786,000)	(7,392,000)
Ending balance	94,006,000	76,835,000
Related Party Deposit Liabilities	$ 96,624,000	$ 110,324,000

Business Combinations Narrative

Business Combinations Narrative (Details)	Nov. 15, 2018USD ($)$ / sharesshares	May 01, 2018USD ($)$ / sharesshares	Dec. 31, 2018USD ($)$ / shares	Jun. 30, 2017USD ($)	Dec. 31, 2018USD ($)$ / shares	Dec. 31, 2017$ / shares
Business Acquisition [Line Items]
Common stock, par value (in dollars per share) | $ / shares			$ 4		$ 4	$ 4
Goodwill, Acquired During Period			$ 18,636,000
SCB Bancorp [Member]
Business Acquisition [Line Items]
Percent Of Acquiree Outstanding Stock Being Acquired In Merger					1
Right To Receive Value of Cash Option | $ / shares	$ 307.93
Right To Receive Value Of Share Option | shares	8.0228
Aggregate Total Of Cash Paid In Business Combination	$ 19,046,000
Common stock, par value (in dollars per share) | $ / shares	$ 7.50
Shares, Issued | shares	1,330,571
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets	$ 479,056,000
Goodwill, Acquired During Period					$ 18,600,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposits	347,971,000
Business Combination, Recognized Identifiable Assets and Liabilities Assumed, Loans	247,561,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents	65,112,000
First BancTrust [Member]
Business Acquisition [Line Items]
Percent Of Acquiree Outstanding Stock Being Acquired In Merger					1
Right To Receive Value of Cash Option | $ / shares		$ 5
Right To Receive Value Of Share Option | shares		0.800
Aggregate Total Of Cash Paid In Business Combination		$ 10,275,000
Common stock, par value (in dollars per share) | $ / shares		$ 0.01
Shares, Issued | shares		1,643,900
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets		$ 501,285,000
Goodwill, Acquired During Period				$ 26,491,000	$ 26,500,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposits		385,624,000
Business Combination, Recognized Identifiable Assets and Liabilities Assumed, Loans		363,281,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents		$ 20,598,000
Sale of Stock, Price Per Share | $ / shares		$ 37.32
Acquired Book Value [Member] | SCB Bancorp [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets	457,324,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposits	348,314,000
Business Combination, Recognized Identifiable Assets and Liabilities Assumed, Loans	255,429,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents	$ 65,112,000
Acquired Book Value [Member] | First BancTrust [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets		$ 474,853,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposits		384,323,000
Business Combination, Recognized Identifiable Assets and Liabilities Assumed, Loans		371,156,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents		$ 20,598,000

Business Combinations Estimated

Business Combinations Estimated Fair Values Of Assets Acquired And Liabilities Assumed (Details) - USD ($)	Nov. 15, 2018	May 01, 2018	Dec. 31, 2018
First BancTrust [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents		$ 20,598,000
Business Combination, Recognized Identifiable Assets and Liabilities Assumed, Securities		(59,586,000)
Business Combination, Recognized Identifiable Assets and Liabilities Assumed, Loans		(363,281,000)
Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed Allowance For Loan Losses		0
Business Combination, Recognized Identifiable Assets and Liabilities Assumed, Repossessed Assets		(535,000)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Premises And Equipment		9,437,000
Business Acquisition, Goodwill, Non-deductible Amount		26,491,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill		5,224,000
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed, Other Assets		16,133,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets		501,285,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposits		(385,624,000)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, FHLB Advances		(30,672,000)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Subordinated Debentures		(4,735,000)
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed, Other Liabilities		8,629,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities		429,660,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net		$ 71,625,000
Finite-Lived Intangible Asset, Useful Life		10 years
Aggregate Total Of Cash Paid In Business Combination		$ 10,275,000
Business Acquisition, Equity Interest Issued or Issuable		61,350,000
Business Combination, Value of Total Consideration Paid		$ 71,625,000
Business Acquisition, YTD Transaction Costs			$ 7,300,000
SCB Bancorp [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents	$ 65,112,000
Business Combination, Recognized Identifiable Assets and Liabilities Assumed, Securities	(97,504,000)
Business Combination, Recognized Identifiable Assets and Liabilities Assumed, Loans	(247,561,000)
Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed Allowance For Loan Losses	0
Business Combination, Recognized Identifiable Assets and Liabilities Assumed, Repossessed Assets	(438,000)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Premises And Equipment	11,343,000
Business Acquisition, Goodwill, Non-deductible Amount	18,636,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	7,269,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	12,298,000
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed, Other Assets	18,895,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets	479,056,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposits	(347,971,000)
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed, Securities Sold Under Agreements to Repurchase	21,180,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, FHLB Advances	(18,971,000)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Long-term Debt	7,724,000
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed, Other Liabilities	15,904,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities	411,750,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net	67,306,000
Finite-Lived Intangible Asset, Useful Life		10 years
Aggregate Total Of Cash Paid In Business Combination	19,046,000
Business Acquisition, Equity Interest Issued or Issuable	48,260,000
Business Combination, Value of Total Consideration Paid	67,306,000
Business Acquisition, YTD Transaction Costs			$ 907,000
Acquired Book Value [Member] | First BancTrust [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents		$ 20,598,000
Business Combination, Recognized Identifiable Assets and Liabilities Assumed, Securities		(59,906,000)
Business Combination, Recognized Identifiable Assets and Liabilities Assumed, Loans		(371,156,000)
Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed Allowance For Loan Losses		(4,412,000)
Business Combination, Recognized Identifiable Assets and Liabilities Assumed, Repossessed Assets		(547,000)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Premises And Equipment		10,126,000
Business Acquisition, Goodwill, Non-deductible Amount		543,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill		0
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed, Other Assets		16,389,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets		474,853,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposits		(384,323,000)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, FHLB Advances		(31,000,000)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Subordinated Debentures		(6,186,000)
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed, Other Liabilities		8,665,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities		430,174,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net		44,679,000
Acquired Book Value [Member] | SCB Bancorp [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents	65,112,000
Business Combination, Recognized Identifiable Assets and Liabilities Assumed, Securities	(97,545,000)
Business Combination, Recognized Identifiable Assets and Liabilities Assumed, Loans	(255,429,000)
Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed Allowance For Loan Losses	(4,491,000)
Business Combination, Recognized Identifiable Assets and Liabilities Assumed, Repossessed Assets	(783,000)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Premises And Equipment	10,115,000
Business Acquisition, Goodwill, Non-deductible Amount	6,782,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	1,228,000
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed, Other Assets	24,821,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets	457,324,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposits	(348,314,000)
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed, Securities Sold Under Agreements to Repurchase	21,180,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, FHLB Advances	(19,000,000)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Long-term Debt	7,724,000
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed, Other Liabilities	15,904,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities	412,122,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net	45,202,000
Fair Value Adjustments [Member] | First BancTrust [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets and Liabilities Assumed, Securities		(320,000)
Business Combination, Recognized Identifiable Assets and Liabilities Assumed, Loans		(7,875,000)
Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed Allowance For Loan Losses		(4,412,000)
Business Combination, Recognized Identifiable Assets and Liabilities Assumed, Repossessed Assets		(12,000)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Premises And Equipment		(689,000)
Business Acquisition, Goodwill, Non-deductible Amount		25,948,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill		5,224,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles		5,224,000
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed, Other Assets		(256,000)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets		26,432,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposits		(1,301,000)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, FHLB Advances		328,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Subordinated Debentures		(1,451,000)
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed, Other Liabilities		(36,000)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities		(514,000)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net		26,946,000
Fair Value Adjustments [Member] | SCB Bancorp [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents	0
Business Combination, Recognized Identifiable Assets and Liabilities Assumed, Securities	(41,000)
Business Combination, Recognized Identifiable Assets and Liabilities Assumed, Loans	(7,868,000)
Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed Allowance For Loan Losses	(4,491,000)
Business Combination, Recognized Identifiable Assets and Liabilities Assumed, Repossessed Assets	(345,000)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Premises And Equipment	1,228,000
Business Acquisition, Goodwill, Non-deductible Amount	11,854,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	7,269,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	11,070,000
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed, Other Assets	(5,926,000)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets	21,732,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposits	(343,000)
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed, Securities Sold Under Agreements to Repurchase	0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, FHLB Advances	(29,000)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Long-term Debt	0
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed, Other Liabilities	0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities	(372,000)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net	22,104,000
Fair Value Adjustments, Accretable portion [Member] | First BancTrust [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets and Liabilities Assumed, Loans		$ (3,600,000)
Fair Value Adjustments, Accretable portion [Member] | SCB Bancorp [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets and Liabilities Assumed, Loans	$ (7,200,000)

Business Combinations Pro Forma

Business Combinations Pro Forma Information (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
SCB Bancorp [Member]
Business Acquisition [Line Items]
Business Acquisitions Pro Forma Net Interest Income	$ 123,161	$ 105,925
Business Acquisitions Pro Forma Provision For Loan Losses	8,667	7,462
Business Acquisitions Pro Forma Non-Interest Income	52,257	47,719
Business Acquisitions Pro Forma Non-Interest Expense	112,246	100,933
Business Acquisitions Pro Forma Income before Income Taxes	54,505	45,249
Business Acquisitions Pro Forma, Income Tax Expense	12,711	16,352
Business Acquisition, Pro Forma Net Income (Loss)	$ 41,794	$ 28,897
Pro Forma Earnings Per Share
Business Acquisition, Pro Forma Earnings Per Share, Basic	$ 2,670	$ 2,080
Business Acquisition, Pro Forma Earnings Per Share, Diluted	$ 2,670	$ 2,080
Weighted Average Basic Shares Outstanding, Pro Forma	15,646,359	13,862,230
Pro Forma Weighted Average Shares Outstanding, Diluted	15,659,818	13,867,105
First BancTrust [Member]
Business Acquisition [Line Items]
Business Acquisitions Pro Forma Net Interest Income	$ 117,450	$ 110,990
Business Acquisitions Pro Forma Provision For Loan Losses	8,867	8,365
Business Acquisitions Pro Forma Non-Interest Income	36,526	34,060
Business Acquisitions Pro Forma Non-Interest Expense	94,464	94,843
Business Acquisitions Pro Forma Income before Income Taxes	50,645	41,842
Business Acquisitions Pro Forma, Income Tax Expense	12,456	15,849
Business Acquisition, Pro Forma Net Income (Loss)	$ 38,189	$ 25,993
Pro Forma Earnings Per Share
Business Acquisition, Pro Forma Earnings Per Share, Basic	$ 2,600	$ 1,830
Business Acquisition, Pro Forma Earnings Per Share, Diluted	$ 2,590	$ 1,830
Weighted Average Basic Shares Outstanding, Pro Forma	14,704,888	14,175,559
Pro Forma Weighted Average Shares Outstanding, Diluted	14,721,708	14,180,434

Leases (Details)

Leases (Details) $ in Thousands	Dec. 31, 2018USD ($)
Operating Leased Assets [Line Items]
Operating Leases, Future Minimum Payments Due, Next Twelve Months	$ 2,880
Operating Leases, Future Minimum Payments, Due in Two Years	2,495
Operating Leases, Future Minimum Payments, Due in Three Years	2,279
Operating Leases, Future Minimum Payments, Due in Four Years	2,223
Operating Leases, Future Minimum Payments, Due in Four and Five Years [Abstract]	2,197
Operating Leases, Future Minimum Payments, Due Thereafter	33,255
Operating Leases, Future Minimum Payments Due	$ 45,329

Leases Lease Terms Details (Det

Leases Lease Terms Details (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Operating Leased Assets [Line Items]
Operating Leases, Rent Expense, Net	$ 2,833,000	$ 2,720,000	$ 2,620,000
Minimum [Member]
Operating Leased Assets [Line Items]
Term of Lease	one year
Renewal Term of Lease	one year
Maximum [Member]
Operating Leased Assets [Line Items]
Term of Lease	fifteen years
Renewal Term of Lease	five years

Parent Company Only Financial_3

Parent Company Only Financial Statements Condensed balance sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Condensed Financial Statements, Captions [Line Items]
Premises and equipment, net	$ 59,117	$ 38,266
Other assets	27,612	18,976
Total assets	3,839,734	2,841,539
Other liabilities	24,627	8,595
Total liabilities	3,363,870	2,533,575
Stockholders’ equity	475,864	307,964	$ 280,673	$ 205,009
Total liabilities and stockholders’ equity	3,839,734	2,841,539
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Cash	18,571	8,296
Premises and equipment, net	3,127	2,654
Investment in subsidiaries	498,544	328,830
Other assets	4,637	3,555
Total assets	524,879	343,335
Debt	29,000	34,313
Other liabilities	20,015	1,058
Total liabilities	49,015	35,371
Stockholders’ equity	475,864	307,964
Total liabilities and stockholders’ equity	$ 524,879	$ 343,335

Parent Company Only Financial_4

Parent Company Only Financial Statements Condensed statements of income (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Condensed Financial Statements, Captions [Line Items]
Income before income taxes	$ 13,145	$ 10,965	$ 13,142	$ 11,253	$ 9,122	$ 11,133	$ 12,127	$ 9,344	$ 48,505	$ 41,726	$ 33,780
Income tax benefit	(3,206)	(2,731)	(3,105)	(2,863)	(4,497)	(3,538)	(3,927)	(3,080)	(11,905)	(15,042)	(11,940)
Net income available to common stockholders	$ 9,939	$ 8,234	$ 10,037	$ 8,390	$ 4,625	$ 7,595	$ 8,200	$ 6,264	36,600	26,684	21,015
Other Comprehensive Income (Loss), Net of Tax									(4,169)	3,525	(6,484)
Comprehensive income									32,431	30,209	15,356
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Dividends from subsidiaries									21,694	18,925	19,475
Other income									171	1,227	66
Total income									21,865	20,152	19,541
Operating expenses									5,424	3,902	3,491
Income before income taxes									16,441	16,250	16,050
Income tax benefit									1,274	864	1,073
Income before equity in undistributed earnings of subsidiaries									17,715	17,114	17,123
Equity in undistributed earnings of subsidiaries									18,885	9,570	4,717
Net income available to common stockholders									36,600	26,684	21,840
Other Comprehensive Income (Loss), Net of Tax									(4,169)	3,525	(6,484)
Comprehensive income									$ 32,431	$ 30,209	$ 15,356

Parent Company Only Financial_5

Parent Company Only Financial Statements Condensed statements of cash flows (Details) - USD ($) $ in Thousands	3 Months Ended				12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Condensed Financial Statements, Captions [Line Items]
Net income	$ 4,625	$ 7,595	$ 8,200	$ 6,264	$ 36,600	$ 26,684	$ 21,840
Depreciation, amortization and accretion, net					7,881	8,134	7,936
Increase in other assets					(4,266)	668	1,802
Increase (decrease) in other liabilities					(7,846)	666	(2,875)
Net cash provided by operating activities					42,175	46,154	27,422
Cash Acquired from Acquisition					56,389	0	36,774
Net cash used in investing activities					(10,961)	(55,962)	(78,059)
Repayment of short-term debt					0	(4,000)	(3,938)
Proceeds from short-term debt					0	0	7,000
Repayments of Long-term Debt					(10,313)	(3,750)	0
Proceeds from long-term debt					0	0	15,000
Proceeds from issuance of common stock					36,645	4,399	195
Payments for Repurchase of Common Stock					(138)	(797)	0
Direct expenses related to capital transactions					(2,309)	(216)	(229)
Dividends paid on preferred stock					0	0	(1,286)
Dividends paid on common stock					(8,792)	(7,228)	(5,277)
Net cash provided by (used in) financing activities					21,307	(77,215)	110,755
Increase (decrease) in cash					52,521	(87,023)	60,118
Cash and cash equivalents at beginning of period				175,902	88,879	175,902	115,784
Cash and cash equivalents at end of period	88,879				141,400	88,879	175,902
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Net income					36,600	26,684	21,840
Depreciation, amortization and accretion, net					90	82	87
Dividends from subsidiaries					21,694	18,925	19,475
Equity in undistributed earnings of subsidiaries					(18,885)	(9,570)	(4,717)
Increase in other assets					(1,645)	(19,348)	(111,379)
Increase (decrease) in other liabilities					79	733	153
Net cash provided by operating activities					37,933	17,506	(74,541)
Payments to Acquire Additional Interest in Subsidiaries					(13,430)	0	(5,000)
Cash Acquired from Acquisition					(29,321)	0	68,798
Net cash used in investing activities					(42,751)	0	63,798
Repayment of short-term debt					0	(4,000)	(3,000)
Proceeds from short-term debt					0	0	7,000
Repayments of Long-term Debt					(10,313)	(3,750)	(938)
Proceeds from long-term debt					0	0	15,000
Proceeds from issuance of common stock					36,645	4,399	195
Payments for Repurchase of Common Stock					(138)	(797)	0
Direct expenses related to capital transactions					(2,309)	(216)	(229)
Dividends paid on preferred stock					0	0	(1,286)
Dividends paid on common stock					(8,792)	(7,228)	(5,277)
Net cash provided by (used in) financing activities					15,093	(11,592)	11,465
Increase (decrease) in cash					10,275	5,914	722
Cash and cash equivalents at beginning of period				$ 2,382	8,296	2,382	1,660
Cash and cash equivalents at end of period	$ 8,296				$ 18,571	$ 8,296	$ 2,382

Quarterly Financial Data -- U_3

Quarterly Financial Data -- Unaudited (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Quarterly Financial Data [Abstract]
Interest income	$ 35,788	$ 33,488	$ 30,131	$ 25,158	$ 25,313	$ 24,614	$ 25,446	$ 24,182
Interest expense	4,786	3,401	2,677	1,963	1,838	1,741	1,493	1,410	$ 12,827	$ 6,482	$ 4,292
Net interest income	31,002	30,087	27,454	23,195	23,475	22,873	23,953	22,772	111,738	93,073	71,204
Provision for loan losses	3,184	2,551	1,877	1,055	2,411	1,489	1,840	1,722
Net interest income after provision for loan losses	27,818	27,536	25,577	22,140	21,064	21,384	22,113	21,050	103,071	85,611	68,378
Other income	11,647	7,919	8,361	7,487	7,210	7,661	7,969	7,496	35,414	30,336	26,912
Other expense	26,320	24,490	20,796	18,374	19,152	17,912	17,955	19,202	89,980	74,221	61,510
Income before income taxes	13,145	10,965	13,142	11,253	9,122	11,133	12,127	9,344	48,505	41,726	33,780
Total	3,206	2,731	3,105	2,863	4,497	3,538	3,927	3,080	11,905	15,042	11,940
Net income					4,625	7,595	8,200	6,264	36,600	26,684	21,840
Dividends on preferred shares					0	0	0	0	0	0	825
Net income available to common stockholders	$ 9,939	$ 8,234	$ 10,037	$ 8,390	$ 4,625	$ 7,595	$ 8,200	$ 6,264	$ 36,600	$ 26,684	$ 21,015
Basic earnings per common share	$ 0.62	$ 0.54	$ 0.72	$ 0.66	$ 0.37	$ 0.61	$ 0.66	$ 0.50	$ 2.53	$ 2.13	$ 2.07
Diluted earnings per common share	$ 0.62	$ 0.54	$ 0.72	$ 0.66	$ 0.37	$ 0.61	$ 0.66	$ 0.50	$ 2.52	$ 2.13	$ 2.05